vfio: Cosmetic error reporting fixes

* Remove terminating newlines from hw_error() and error_report() calls
* Fix cut-n-paste error in text (s/to/from/)

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

.gitignore

@@ -21,6 +21,7 @@
 libdis*
 libuser
 /linux-headers/asm
+/qga/qapi-generated
 /qapi-generated
 /qapi-types.[ch]
 /qapi-visit.[ch]

.gitmodules

@@ -13,6 +13,9 @@
 [submodule "roms/openbios"]
 	path = roms/openbios
 	url = git://git.qemu-project.org/openbios.git
+[submodule "roms/openhackware"]
+	path = roms/openhackware
+	url = git://git.qemu-project.org/openhackware.git
 [submodule "roms/qemu-palcode"]
 	path = roms/qemu-palcode
 	url = git://github.com/rth7680/qemu-palcode.git

.travis.yml

@@ -4,6 +4,12 @@ python:
 compiler:
   - gcc
   - clang
+notifications:
+  irc:
+    channels:
+      - "irc.oftc.net#qemu"
+    on_success: change
+    on_failure: always
 env:
   global:
     - TEST_CMD="make check"
@@ -14,23 +20,23 @@ env:
     - GUI_PKGS="libgtk-3-dev libvte-2.90-dev libsdl1.2-dev libpng12-dev libpixman-1-dev"
     - EXTRA_PKGS=""
   matrix:
-  - TARGETS=alpha-softmmu,alpha-linux-user
-  - TARGETS=arm-softmmu,arm-linux-user
-  - TARGETS=aarch64-softmmu,aarch64-linux-user
-  - TARGETS=cris-softmmu
-  - TARGETS=i386-softmmu,x86_64-softmmu
-  - TARGETS=lm32-softmmu
-  - TARGETS=m68k-softmmu
-  - TARGETS=microblaze-softmmu,microblazeel-softmmu
-  - TARGETS=mips-softmmu,mips64-softmmu,mips64el-softmmu,mipsel-softmmu
-  - TARGETS=moxie-softmmu
-  - TARGETS=or32-softmmu,
-  - TARGETS=ppc-softmmu,ppc64-softmmu,ppcemb-softmmu
-  - TARGETS=s390x-softmmu
-  - TARGETS=sh4-softmmu,sh4eb-softmmu
-  - TARGETS=sparc-softmmu,sparc64-softmmu
-  - TARGETS=unicore32-softmmu
-  - TARGETS=xtensa-softmmu,xtensaeb-softmmu
+    - TARGETS=alpha-softmmu,alpha-linux-user
+    - TARGETS=arm-softmmu,arm-linux-user
+    - TARGETS=aarch64-softmmu,aarch64-linux-user
+    - TARGETS=cris-softmmu
+    - TARGETS=i386-softmmu,x86_64-softmmu
+    - TARGETS=lm32-softmmu
+    - TARGETS=m68k-softmmu
+    - TARGETS=microblaze-softmmu,microblazeel-softmmu
+    - TARGETS=mips-softmmu,mips64-softmmu,mips64el-softmmu,mipsel-softmmu
+    - TARGETS=moxie-softmmu
+    - TARGETS=or32-softmmu,
+    - TARGETS=ppc-softmmu,ppc64-softmmu,ppcemb-softmmu
+    - TARGETS=s390x-softmmu
+    - TARGETS=sh4-softmmu,sh4eb-softmmu
+    - TARGETS=sparc-softmmu,sparc64-softmmu
+    - TARGETS=unicore32-softmmu
+    - TARGETS=xtensa-softmmu,xtensaeb-softmmu
 before_install:
   - git submodule update --init --recursive
   - sudo apt-get update -qq
@@ -46,6 +52,10 @@ matrix:
     - env: TARGETS=i386-softmmu,x86_64-softmmu
            EXTRA_CONFIG="--enable-debug --enable-tcg-interpreter"
       compiler: gcc
+    # All the extra -dev packages
+    - env: TARGETS=i386-softmmu,x86_64-softmmu
+           EXTRA_PKGS="libaio-dev libcap-ng-dev libattr1-dev libbrlapi-dev uuid-dev libusb-1.0.0-dev"
+      compiler: gcc
     # Currently configure doesn't force --disable-pie
     - env: TARGETS=i386-softmmu,x86_64-softmmu
            EXTRA_CONFIG="--enable-gprof --enable-gcov --disable-pie"
@@ -65,8 +75,7 @@ matrix:
            EXTRA_CONFIG="--enable-trace-backend=ftrace"
            TEST_CMD=""
       compiler: gcc
-    # This disabled make check for the ftrace backend which needs more setting up
-    # Currently broken on 12.04 due to mis-packaged liburcu and changed API, will be pulled.
-    #- env: TARGETS=i386-softmmu,x86_64-softmmu
-    #       EXTRA_PKGS="liblttng-ust-dev liburcu-dev"
-    #       EXTRA_CONFIG="--enable-trace-backend=ust"
+    - env: TARGETS=i386-softmmu,x86_64-softmmu
+          EXTRA_PKGS="liblttng-ust-dev liburcu-dev"
+          EXTRA_CONFIG="--enable-trace-backend=ust"
+      compiler: gcc

MAINTAINERS

@@ -158,7 +158,6 @@ Guest CPU Cores (KVM):
 ----------------------
 
 Overall
-M: Gleb Natapov <gleb@redhat.com>
 M: Paolo Bonzini <pbonzini@redhat.com>
 L: kvm@vger.kernel.org
 S: Supported
@@ -176,12 +175,14 @@ S: Maintained
 F: target-ppc/kvm.c
 
 S390
+M: Christian Borntraeger <borntraeger@de.ibm.com>
+M: Cornelia Huck <cornelia.huck@de.ibm.com>
 M: Alexander Graf <agraf@suse.de>
 S: Maintained
 F: target-s390x/kvm.c
+F: hw/intc/s390_flic.[hc]
 
 X86
-M: Gleb Natapov <gleb@redhat.com>
 M: Marcelo Tosatti <mtosatti@redhat.com>
 L: kvm@vger.kernel.org
 S: Supported
@@ -495,10 +496,13 @@ F: hw/s390x/s390-*.c
 
 S390 Virtio-ccw
 M: Cornelia Huck <cornelia.huck@de.ibm.com>
+M: Christian Borntraeger <borntraeger@de.ibm.com>
 M: Alexander Graf <agraf@suse.de>
 S: Supported
 F: hw/s390x/s390-virtio-ccw.c
 F: hw/s390x/css.[hc]
+F: hw/s390x/sclp*.[hc]
+F: hw/s390x/ipl*.[hc]
 T: git git://github.com/cohuck/qemu virtio-ccw-upstr
 
 UniCore32 Machines
@@ -629,6 +633,7 @@ F: hw/block/virtio-blk.c
 
 virtio-ccw
 M: Cornelia Huck <cornelia.huck@de.ibm.com>
+M: Christian Borntraeger <borntraeger@de.ibm.com>
 S: Supported
 F: hw/s390x/virtio-ccw.[hc]
 T: git git://github.com/cohuck/qemu virtio-ccw-upstr

Makefile

@@ -265,10 +265,7 @@ clean:
 # avoid old build problems by removing potentially incorrect old files
 	rm -f config.mak op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h
 	rm -f qemu-options.def
-	find . -name '*.[oda]' -type f -exec rm -f {} +
-	find . -name '*.l[oa]' -type f -exec rm -f {} +
-	find . -name '*$(DSOSUF)' -type f -exec rm -f {} +
-	find . -name '*.mo' -type f -exec rm -f {} +
+	find . \( -name '*.l[oa]' -o -name '*.so' -o -name '*.dll' -o -name '*.mo' -o -name '*.[oda]' \) -type f -exec rm {} +
 	rm -f $(filter-out %.tlb,$(TOOLS)) $(HELPERS-y) qemu-ga TAGS cscope.* *.pod *~ */*~
 	rm -f fsdev/*.pod
 	rm -rf .libs */.libs
@@ -399,7 +396,7 @@ endif
 		$(INSTALL_DATA) $(SRC_PATH)/pc-bios/keymaps/$$x "$(DESTDIR)$(qemu_datadir)/keymaps"; \
 	done
 	for d in $(TARGET_DIRS); do \
-	$(MAKE) -C $$d $@ || exit 1 ; \
+	$(MAKE) $(SUBDIR_MAKEFLAGS) TARGET_DIR=$$d/ -C $$d $@ || exit 1 ; \
         done
 
 # various test targets

Makefile.objs

@@ -21,11 +21,6 @@ block-obj-y += coroutine-$(CONFIG_COROUTINE_BACKEND).o
 
 block-obj-m = block/
 
-ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy)
-# Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
-# only pull in the actual virtio-9p device if we also enabled virtio.
-CONFIG_REALLY_VIRTFS=y
-endif
 
 ######################################################################
 # smartcard
@@ -44,6 +39,7 @@ libcacard-y += libcacard/vcardt.o
 
 ifeq ($(CONFIG_SOFTMMU),y)
 common-obj-y = blockdev.o blockdev-nbd.o block/
+common-obj-y += iothread.o
 common-obj-y += net/
 common-obj-y += qdev-monitor.o device-hotplug.o
 common-obj-$(CONFIG_WIN32) += os-win32.o

VERSION

@@ -1 +1 @@
-1.7.50
+1.7.90

arch_init.c

@@ -164,8 +164,9 @@ static struct {
     uint8_t *encoded_buf;
     /* buffer for storing page content */
     uint8_t *current_buf;
-    /* Cache for XBZRLE */
+    /* Cache for XBZRLE, Protected by lock. */
     PageCache *cache;
+    QemuMutex lock;
 } XBZRLE = {
     .encoded_buf = NULL,
     .current_buf = NULL,
@@ -174,16 +175,52 @@ static struct {
 /* buffer used for XBZRLE decoding */
 static uint8_t *xbzrle_decoded_buf;
 
+static void XBZRLE_cache_lock(void)
+{
+    if (migrate_use_xbzrle())
+        qemu_mutex_lock(&XBZRLE.lock);
+}
+
+static void XBZRLE_cache_unlock(void)
+{
+    if (migrate_use_xbzrle())
+        qemu_mutex_unlock(&XBZRLE.lock);
+}
+
 int64_t xbzrle_cache_resize(int64_t new_size)
 {
+    PageCache *new_cache, *cache_to_free;
+
     if (new_size < TARGET_PAGE_SIZE) {
         return -1;
     }
 
+    /* no need to lock, the current thread holds qemu big lock */
     if (XBZRLE.cache != NULL) {
-        return cache_resize(XBZRLE.cache, new_size / TARGET_PAGE_SIZE) *
-            TARGET_PAGE_SIZE;
+        /* check XBZRLE.cache again later */
+        if (pow2floor(new_size) == migrate_xbzrle_cache_size()) {
+            return pow2floor(new_size);
+        }
+        new_cache = cache_init(new_size / TARGET_PAGE_SIZE,
+                                        TARGET_PAGE_SIZE);
+        if (!new_cache) {
+            DPRINTF("Error creating cache\n");
+            return -1;
+        }
+
+        XBZRLE_cache_lock();
+        /* the XBZRLE.cache may have be destroyed, check it again */
+        if (XBZRLE.cache != NULL) {
+            cache_to_free = XBZRLE.cache;
+            XBZRLE.cache = new_cache;
+        } else {
+            cache_to_free = new_cache;
+        }
+        XBZRLE_cache_unlock();
+
+        cache_fini(cache_to_free);
     }
+
     return pow2floor(new_size);
 }
 
@@ -539,6 +576,8 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
             ret = ram_control_save_page(f, block->offset,
                                offset, TARGET_PAGE_SIZE, &bytes_sent);
 
+            XBZRLE_cache_lock();
+
             current_addr = block->offset + offset;
             if (ret != RAM_SAVE_CONTROL_NOT_SUPP) {
                 if (ret != RAM_SAVE_CONTROL_DELAYED) {
@@ -587,6 +626,7 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
                 acct_info.norm_pages++;
             }
 
+            XBZRLE_cache_unlock();
             /* if page is unmodified, continue to the next */
             if (bytes_sent > 0) {
                 last_sent_block = block;
@@ -654,6 +694,7 @@ static void migration_end(void)
         migration_bitmap = NULL;
     }
 
+    XBZRLE_cache_lock();
     if (XBZRLE.cache) {
         cache_fini(XBZRLE.cache);
         g_free(XBZRLE.cache);
@@ -663,6 +704,7 @@ static void migration_end(void)
         XBZRLE.encoded_buf = NULL;
         XBZRLE.current_buf = NULL;
     }
+    XBZRLE_cache_unlock();
 }
 
 static void ram_migration_cancel(void *opaque)
@@ -693,13 +735,17 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
     dirty_rate_high_cnt = 0;
 
     if (migrate_use_xbzrle()) {
+        qemu_mutex_lock_iothread();
         XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
                                   TARGET_PAGE_SIZE,
                                   TARGET_PAGE_SIZE);
         if (!XBZRLE.cache) {
+            qemu_mutex_unlock_iothread();
             DPRINTF("Error creating cache\n");
             return -1;
         }
+        qemu_mutex_init(&XBZRLE.lock);
+        qemu_mutex_unlock_iothread();
 
         /* We prefer not to abort if there is no memory */
         XBZRLE.encoded_buf = g_try_malloc0(TARGET_PAGE_SIZE);

async.c

@@ -214,6 +214,7 @@ aio_ctx_finalize(GSource     *source)
     thread_pool_free(ctx->thread_pool);
     aio_set_event_notifier(ctx, &ctx->notifier, NULL);
     event_notifier_cleanup(&ctx->notifier);
+    rfifolock_destroy(&ctx->lock);
     qemu_mutex_destroy(&ctx->bh_lock);
     g_array_free(ctx->pollfds, TRUE);
     timerlistgroup_deinit(&ctx->tlg);
@@ -250,6 +251,12 @@ static void aio_timerlist_notify(void *opaque)
     aio_notify(opaque);
 }
 
+static void aio_rfifolock_cb(void *opaque)
+{
+    /* Kick owner thread in case they are blocked in aio_poll() */
+    aio_notify(opaque);
+}
+
 AioContext *aio_context_new(void)
 {
     AioContext *ctx;
@@ -257,6 +264,7 @@ AioContext *aio_context_new(void)
     ctx->pollfds = g_array_new(FALSE, FALSE, sizeof(GPollFD));
     ctx->thread_pool = NULL;
     qemu_mutex_init(&ctx->bh_lock);
+    rfifolock_init(&ctx->lock, aio_rfifolock_cb, ctx);
     event_notifier_init(&ctx->notifier, false);
     aio_set_event_notifier(ctx, &ctx->notifier, 
                            (EventNotifierHandler *)
@@ -275,3 +283,13 @@ void aio_context_unref(AioContext *ctx)
 {
     g_source_unref(&ctx->source);
 }
+
+void aio_context_acquire(AioContext *ctx)
+{
+    rfifolock_lock(&ctx->lock);
+}
+
+void aio_context_release(AioContext *ctx)
+{
+    rfifolock_unlock(&ctx->lock);
+}

backends/baum.c

@@ -566,8 +566,10 @@ CharDriverState *chr_baum_init(void)
     BaumDriverState *baum;
     CharDriverState *chr;
     brlapi_handle_t *handle;
-#if defined(CONFIG_SDL) && SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0)
+#if defined(CONFIG_SDL)
+#if SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0)
     SDL_SysWMinfo info;
+#endif
 #endif
     int tty;
 
@@ -595,12 +597,14 @@ CharDriverState *chr_baum_init(void)
         goto fail;
     }
 
-#if defined(CONFIG_SDL) && SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0)
+#if defined(CONFIG_SDL)
+#if SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0)
     memset(&info, 0, sizeof(info));
     SDL_VERSION(&info.version);
     if (SDL_GetWMInfo(&info))
         tty = info.info.x11.wmwindow;
     else
+#endif
 #endif
         tty = BRLAPI_TTY_DEFAULT;
 

block.c

@@ -935,7 +935,7 @@ static int bdrv_open_common(BlockDriverState *bs, BlockDriverState *file,
 
     bdrv_refresh_limits(bs);
     assert(bdrv_opt_mem_align(bs) != 0);
-    assert(bs->request_alignment != 0);
+    assert((bs->request_alignment != 0) || bs->sg);
 
 #ifndef _WIN32
     if (bs->is_temporary) {
@@ -1017,7 +1017,12 @@ static int bdrv_file_open(BlockDriverState *bs, const char *filename,
             ret = -EINVAL;
             goto fail;
         }
-        qdict_del(*options, "filename");
+
+        if (!drv->bdrv_needs_filename) {
+            qdict_del(*options, "filename");
+        } else {
+            filename = qdict_get_str(*options, "filename");
+        }
     }
 
     if (!drv->bdrv_file_open) {
@@ -1229,6 +1234,7 @@ int bdrv_open(BlockDriverState **pbs, const char *filename,
         ret = bdrv_file_open(bs, filename, &options, flags & ~BDRV_O_PROTOCOL,
                              &local_err);
         if (!ret) {
+            drv = bs->drv;
             goto done;
         } else if (bs->drv) {
             goto close_and_fail;
@@ -1315,7 +1321,7 @@ int bdrv_open(BlockDriverState **pbs, const char *filename,
                           bdrv_open_flags(bs, flags | BDRV_O_UNMAP) |
                           BDRV_O_PROTOCOL, true, &local_err);
     if (ret < 0) {
-        goto fail;
+        goto unlink_and_fail;
     }
 
     /* Find the right image format driver */
@@ -1382,12 +1388,19 @@ done:
         ret = -EINVAL;
         goto close_and_fail;
     }
-    QDECREF(options);
 
     if (!bdrv_key_required(bs)) {
         bdrv_dev_change_media_cb(bs, true);
+    } else if (!runstate_check(RUN_STATE_PRELAUNCH)
+               && !runstate_check(RUN_STATE_INMIGRATE)
+               && !runstate_check(RUN_STATE_PAUSED)) { /* HACK */
+        error_setg(errp,
+                   "Guest must be stopped for opening of encrypted image");
+        ret = -EBUSY;
+        goto close_and_fail;
     }
 
+    QDECREF(options);
     *pbs = bs;
     return 0;
 
@@ -1847,11 +1860,6 @@ static void bdrv_move_feature_fields(BlockDriverState *bs_dest,
     pstrcpy(bs_dest->device_name, sizeof(bs_dest->device_name),
             bs_src->device_name);
     bs_dest->device_list = bs_src->device_list;
-
-    /* keep the same entry in graph_bdrv_states
-     * We do want to swap name but don't want to swap linked list entries
-     */
-    bs_dest->node_list   = bs_src->node_list;
 }
 
 /*
@@ -1870,6 +1878,17 @@ void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old)
 {
     BlockDriverState tmp;
 
+    /* The code needs to swap the node_name but simply swapping node_list won't
+     * work so first remove the nodes from the graph list, do the swap then
+     * insert them back if needed.
+     */
+    if (bs_new->node_name[0] != '\0') {
+        QTAILQ_REMOVE(&graph_bdrv_states, bs_new, node_list);
+    }
+    if (bs_old->node_name[0] != '\0') {
+        QTAILQ_REMOVE(&graph_bdrv_states, bs_old, node_list);
+    }
+
     /* bs_new must be anonymous and shouldn't have anything fancy enabled */
     assert(bs_new->device_name[0] == '\0');
     assert(QLIST_EMPTY(&bs_new->dirty_bitmaps));
@@ -1898,6 +1917,14 @@ void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old)
     assert(bs_new->io_limits_enabled == false);
     assert(!throttle_have_timer(&bs_new->throttle_state));
 
+    /* insert the nodes back into the graph node list if needed */
+    if (bs_new->node_name[0] != '\0') {
+        QTAILQ_INSERT_TAIL(&graph_bdrv_states, bs_new, node_list);
+    }
+    if (bs_old->node_name[0] != '\0') {
+        QTAILQ_INSERT_TAIL(&graph_bdrv_states, bs_old, node_list);
+    }
+
     bdrv_rebind(bs_new);
     bdrv_rebind(bs_old);
 }
@@ -4035,7 +4062,7 @@ int bdrv_debug_remove_breakpoint(BlockDriverState *bs, const char *tag)
 
 int bdrv_debug_resume(BlockDriverState *bs, const char *tag)
 {
-    while (bs && bs->drv && !bs->drv->bdrv_debug_resume) {
+    while (bs && (!bs->drv || !bs->drv->bdrv_debug_resume)) {
         bs = bs->file;
     }
 
@@ -4754,19 +4781,43 @@ flush_parent:
     return bdrv_co_flush(bs->file);
 }
 
-void bdrv_invalidate_cache(BlockDriverState *bs)
+void bdrv_invalidate_cache(BlockDriverState *bs, Error **errp)
 {
-    if (bs->drv && bs->drv->bdrv_invalidate_cache) {
-        bs->drv->bdrv_invalidate_cache(bs);
+    Error *local_err = NULL;
+    int ret;
+
+    if (!bs->drv)  {
+        return;
+    }
+
+    if (bs->drv->bdrv_invalidate_cache) {
+        bs->drv->bdrv_invalidate_cache(bs, &local_err);
+    } else if (bs->file) {
+        bdrv_invalidate_cache(bs->file, &local_err);
+    }
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    ret = refresh_total_sectors(bs, bs->total_sectors);
+    if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not refresh total sector count");
+        return;
     }
 }
 
-void bdrv_invalidate_cache_all(void)
+void bdrv_invalidate_cache_all(Error **errp)
 {
     BlockDriverState *bs;
+    Error *local_err = NULL;
 
     QTAILQ_FOREACH(bs, &bdrv_states, device_list) {
-        bdrv_invalidate_cache(bs);
+        bdrv_invalidate_cache(bs, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
     }
 }
 
@@ -5370,43 +5421,37 @@ int bdrv_amend_options(BlockDriverState *bs, QEMUOptionParameter *options)
     return bs->drv->bdrv_amend_options(bs, options);
 }
 
-/* Used to recurse on single child block filters.
- * Single child block filter will store their child in bs->file.
+/* This function will be called by the bdrv_recurse_is_first_non_filter method
+ * of block filter and by bdrv_is_first_non_filter.
+ * It is used to test if the given bs is the candidate or recurse more in the
+ * node graph.
  */
-bool bdrv_generic_is_first_non_filter(BlockDriverState *bs,
-                                      BlockDriverState *candidate)
-{
-    if (!bs->drv) {
-        return false;
-    }
-
-    if (!bs->drv->authorizations[BS_IS_A_FILTER]) {
-        if (bs == candidate) {
-            return true;
-        } else {
-            return false;
-        }
-    }
-
-    if (!bs->drv->authorizations[BS_FILTER_PASS_DOWN]) {
-        return false;
-    }
-
-    if (!bs->file) {
-        return false;
-    }
-
-    return bdrv_recurse_is_first_non_filter(bs->file, candidate);
-}
-
 bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs,
                                       BlockDriverState *candidate)
 {
-    if (bs->drv && bs->drv->bdrv_recurse_is_first_non_filter) {
+    /* return false if basic checks fails */
+    if (!bs || !bs->drv) {
+        return false;
+    }
+
+    /* the code reached a non block filter driver -> check if the bs is
+     * the same as the candidate. It's the recursion termination condition.
+     */
+    if (!bs->drv->is_filter) {
+        return bs == candidate;
+    }
+    /* Down this path the driver is a block filter driver */
+
+    /* If the block filter recursion method is defined use it to recurse down
+     * the node graph.
+     */
+    if (bs->drv->bdrv_recurse_is_first_non_filter) {
         return bs->drv->bdrv_recurse_is_first_non_filter(bs, candidate);
     }
 
-    return bdrv_generic_is_first_non_filter(bs, candidate);
+    /* the driver is a block filter but don't allow to recurse -> return false
+     */
+    return false;
 }
 
 /* This function checks if the candidate is the first non filter bs down it's
@@ -5421,6 +5466,7 @@ bool bdrv_is_first_non_filter(BlockDriverState *candidate)
     QTAILQ_FOREACH(bs, &bdrv_states, device_list) {
         bool perm;
 
+        /* try to recurse in this top level bs */
         perm = bdrv_recurse_is_first_non_filter(bs, candidate);
 
         /* candidate is the first non filter */

block/blkverify.c

@@ -288,6 +288,20 @@ static BlockDriverAIOCB *blkverify_aio_flush(BlockDriverState *bs,
     return bdrv_aio_flush(s->test_file, cb, opaque);
 }
 
+static bool blkverify_recurse_is_first_non_filter(BlockDriverState *bs,
+                                                  BlockDriverState *candidate)
+{
+    BDRVBlkverifyState *s = bs->opaque;
+
+    bool perm = bdrv_recurse_is_first_non_filter(bs->file, candidate);
+
+    if (perm) {
+        return true;
+    }
+
+    return bdrv_recurse_is_first_non_filter(s->test_file, candidate);
+}
+
 static BlockDriver bdrv_blkverify = {
     .format_name            = "blkverify",
     .protocol_name          = "blkverify",
@@ -302,7 +316,8 @@ static BlockDriver bdrv_blkverify = {
     .bdrv_aio_writev        = blkverify_aio_writev,
     .bdrv_aio_flush         = blkverify_aio_flush,
 
-    .authorizations         = { true, false },
+    .is_filter              = true,
+    .bdrv_recurse_is_first_non_filter = blkverify_recurse_is_first_non_filter,
 };
 
 static void bdrv_blkverify_init(void)

block/gluster.c

@@ -3,21 +3,12 @@
  *
  * Copyright (C) 2012 Bharata B Rao <bharata@linux.vnet.ibm.com>
  *
- * Pipe handling mechanism in AIO implementation is derived from
- * block/rbd.c. Hence,
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
  *
- * Copyright (C) 2010-2011 Christian Brunner <chb@muc.de>,
- *                         Josh Durgin <josh.durgin@dreamhost.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
  */
 #include <glusterfs/api/glfs.h>
 #include "block/block_int.h"
-#include "qemu/sockets.h"
 #include "qemu/uri.h"
 
 typedef struct GlusterAIOCB {
@@ -32,9 +23,6 @@ typedef struct BDRVGlusterState {
     struct glfs_fd *fd;
 } BDRVGlusterState;
 
-#define GLUSTER_FD_READ  0
-#define GLUSTER_FD_WRITE 1
-
 typedef struct GlusterConf {
     char *server;
     int port;

block/iscsi.c

@@ -1231,12 +1231,11 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
     bs->total_sectors = sector_lun2qemu(iscsilun->num_blocks, iscsilun);
     bs->request_alignment = iscsilun->block_size;
 
-    /* Medium changer or tape. We dont have any emulation for this so this must
-     * be sg ioctl compatible. We force it to be sg, otherwise qemu will try
-     * to read from the device to guess the image format.
+    /* We don't have any emulation for devices other than disks and CD-ROMs, so
+     * this must be sg ioctl compatible. We force it to be sg, otherwise qemu
+     * will try to read from the device to guess the image format.
      */
-    if (iscsilun->type == TYPE_MEDIUM_CHANGER ||
-        iscsilun->type == TYPE_TAPE) {
+    if (iscsilun->type != TYPE_DISK && iscsilun->type != TYPE_ROM) {
         bs->sg = 1;
     }
 

block/mirror.c

@@ -520,9 +520,6 @@ static void mirror_complete(BlockJob *job, Error **errp)
 
     ret = bdrv_open_backing_file(s->target, NULL, &local_err);
     if (ret < 0) {
-        char backing_filename[PATH_MAX];
-        bdrv_get_full_backing_filename(s->target, backing_filename,
-                                       sizeof(backing_filename));
         error_propagate(errp, local_err);
         return;
     }

block/nbd-client.c

@@ -43,6 +43,17 @@ static void nbd_recv_coroutines_enter_all(NbdClientSession *s)
     }
 }
 
+static void nbd_teardown_connection(NbdClientSession *client)
+{
+    /* finish any pending coroutines */
+    shutdown(client->sock, 2);
+    nbd_recv_coroutines_enter_all(client);
+
+    qemu_aio_set_fd_handler(client->sock, NULL, NULL, NULL);
+    closesocket(client->sock);
+    client->sock = -1;
+}
+
 static void nbd_reply_ready(void *opaque)
 {
     NbdClientSession *s = opaque;
@@ -78,7 +89,7 @@ static void nbd_reply_ready(void *opaque)
     }
 
 fail:
-    nbd_recv_coroutines_enter_all(s);
+    nbd_teardown_connection(s);
 }
 
 static void nbd_restart_write(void *opaque)
@@ -324,7 +335,7 @@ int nbd_client_session_co_discard(NbdClientSession *client, int64_t sector_num,
 
 }
 
-static void nbd_teardown_connection(NbdClientSession *client)
+void nbd_client_session_close(NbdClientSession *client)
 {
     struct nbd_request request = {
         .type = NBD_CMD_DISC,
@@ -332,22 +343,14 @@ static void nbd_teardown_connection(NbdClientSession *client)
         .len = 0
     };
 
-    nbd_send_request(client->sock, &request);
-
-    /* finish any pending coroutines */
-    shutdown(client->sock, 2);
-    nbd_recv_coroutines_enter_all(client);
-
-    qemu_aio_set_fd_handler(client->sock, NULL, NULL, NULL);
-    closesocket(client->sock);
-    client->sock = -1;
-}
-
-void nbd_client_session_close(NbdClientSession *client)
-{
     if (!client->bs) {
         return;
     }
+    if (client->sock == -1) {
+        return;
+    }
+
+    nbd_send_request(client->sock, &request);
 
     nbd_teardown_connection(client);
     client->bs = NULL;

block/nfs.c

@@ -112,6 +112,9 @@ nfs_co_generic_cb(int ret, struct nfs_context *nfs, void *data,
     if (task->ret == 0 && task->st) {
         memcpy(task->st, data, sizeof(struct stat));
     }
+    if (task->ret < 0) {
+        error_report("NFS Error: %s", nfs_get_error(nfs));
+    }
     if (task->co) {
         task->bh = qemu_bh_new(nfs_co_generic_bh_cb, task);
         qemu_bh_schedule(task->bh);

block/qcow2-cluster.c

@@ -380,6 +380,10 @@ static int coroutine_fn copy_sectors(BlockDriverState *bs,
 
     BLKDBG_EVENT(bs->file, BLKDBG_COW_READ);
 
+    if (!bs->drv) {
+        return -ENOMEDIUM;
+    }
+
     /* Call .bdrv_co_readv() directly instead of using the public block-layer
      * interface.  This avoids double I/O throttling and request tracking,
      * which can lead to deadlock when block layer copy-on-read is enabled.

block/qcow2-refcount.c

@@ -96,7 +96,8 @@ static int get_refcount(BlockDriverState *bs, int64_t cluster_index)
     refcount_table_index = cluster_index >> (s->cluster_bits - REFCOUNT_SHIFT);
     if (refcount_table_index >= s->refcount_table_size)
         return 0;
-    refcount_block_offset = s->refcount_table[refcount_table_index];
+    refcount_block_offset =
+        s->refcount_table[refcount_table_index] & REFT_OFFSET_MASK;
     if (!refcount_block_offset)
         return 0;
 
@@ -1382,7 +1383,7 @@ static int write_reftable_entry(BlockDriverState *bs, int rt_index)
  * does _not_ decrement the reference count for the currently occupied cluster.
  *
  * This function prints an informative message to stderr on error (and returns
- * -errno); on success, 0 is returned.
+ * -errno); on success, the offset of the newly allocated cluster is returned.
  */
 static int64_t realloc_refcount_block(BlockDriverState *bs, int reftable_index,
                                       uint64_t offset)
@@ -1398,14 +1399,14 @@ static int64_t realloc_refcount_block(BlockDriverState *bs, int reftable_index,
         fprintf(stderr, "Could not allocate new cluster: %s\n",
                 strerror(-new_offset));
         ret = new_offset;
-        goto fail;
+        goto done;
     }
 
     /* fetch current refcount block content */
     ret = qcow2_cache_get(bs, s->refcount_block_cache, offset, &refcount_block);
     if (ret < 0) {
         fprintf(stderr, "Could not fetch refcount block: %s\n", strerror(-ret));
-        goto fail;
+        goto fail_free_cluster;
     }
 
     /* new block has not yet been entered into refcount table, therefore it is
@@ -1416,8 +1417,7 @@ static int64_t realloc_refcount_block(BlockDriverState *bs, int reftable_index,
                 "check failed: %s\n", strerror(-ret));
         /* the image will be marked corrupt, so don't even attempt on freeing
          * the cluster */
-        new_offset = 0;
-        goto fail;
+        goto done;
     }
 
     /* write to new block */
@@ -1425,7 +1425,7 @@ static int64_t realloc_refcount_block(BlockDriverState *bs, int reftable_index,
             s->cluster_sectors);
     if (ret < 0) {
         fprintf(stderr, "Could not write refcount block: %s\n", strerror(-ret));
-        goto fail;
+        goto fail_free_cluster;
     }
 
     /* update refcount table */
@@ -1435,24 +1435,27 @@ static int64_t realloc_refcount_block(BlockDriverState *bs, int reftable_index,
     if (ret < 0) {
         fprintf(stderr, "Could not update refcount table: %s\n",
                 strerror(-ret));
-        goto fail;
+        goto fail_free_cluster;
     }
 
-fail:
-    if (new_offset && (ret < 0)) {
-        qcow2_free_clusters(bs, new_offset, s->cluster_size,
-                QCOW2_DISCARD_ALWAYS);
-    }
+    goto done;
+
+fail_free_cluster:
+    qcow2_free_clusters(bs, new_offset, s->cluster_size, QCOW2_DISCARD_OTHER);
+
+done:
     if (refcount_block) {
-        if (ret < 0) {
-            qcow2_cache_put(bs, s->refcount_block_cache, &refcount_block);
-        } else {
-            ret = qcow2_cache_put(bs, s->refcount_block_cache, &refcount_block);
-        }
+        /* This should never fail, as it would only do so if the given refcount
+         * block cannot be found in the cache. As this is impossible as long as
+         * there are no bugs, assert the success. */
+        int tmp = qcow2_cache_put(bs, s->refcount_block_cache, &refcount_block);
+        assert(tmp == 0);
     }
+
     if (ret < 0) {
         return ret;
     }
+
     return new_offset;
 }
 

block/qcow2.c

@@ -644,7 +644,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
     }
 
     /* Clear unknown autoclear feature bits */
-    if (!bs->read_only && s->autoclear_features != 0) {
+    if (!bs->read_only && !(flags & BDRV_O_INCOMING) && s->autoclear_features) {
         s->autoclear_features = 0;
         ret = qcow2_update_header(bs);
         if (ret < 0) {
@@ -657,7 +657,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
     qemu_co_mutex_init(&s->lock);
 
     /* Repair image if dirty */
-    if (!(flags & BDRV_O_CHECK) && !bs->read_only &&
+    if (!(flags & (BDRV_O_CHECK | BDRV_O_INCOMING)) && !bs->read_only &&
         (s->incompatible_features & QCOW2_INCOMPAT_DIRTY)) {
         BdrvCheckResult result = {0};
 
@@ -1137,10 +1137,12 @@ static void qcow2_close(BlockDriverState *bs)
     /* else pre-write overlap checks in cache_destroy may crash */
     s->l1_table = NULL;
 
-    qcow2_cache_flush(bs, s->l2_table_cache);
-    qcow2_cache_flush(bs, s->refcount_block_cache);
+    if (!(bs->open_flags & BDRV_O_INCOMING)) {
+        qcow2_cache_flush(bs, s->l2_table_cache);
+        qcow2_cache_flush(bs, s->refcount_block_cache);
 
-    qcow2_mark_clean(bs);
+        qcow2_mark_clean(bs);
+    }
 
     qcow2_cache_destroy(bs, s->l2_table_cache);
     qcow2_cache_destroy(bs, s->refcount_block_cache);
@@ -1154,7 +1156,7 @@ static void qcow2_close(BlockDriverState *bs)
     qcow2_free_snapshots(bs);
 }
 
-static void qcow2_invalidate_cache(BlockDriverState *bs)
+static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp)
 {
     BDRVQcowState *s = bs->opaque;
     int flags = s->flags;
@@ -1162,6 +1164,8 @@ static void qcow2_invalidate_cache(BlockDriverState *bs)
     AES_KEY aes_decrypt_key;
     uint32_t crypt_method = 0;
     QDict *options;
+    Error *local_err = NULL;
+    int ret;
 
     /*
      * Backing files are read-only which makes all of their metadata immutable,
@@ -1176,12 +1180,25 @@ static void qcow2_invalidate_cache(BlockDriverState *bs)
 
     qcow2_close(bs);
 
-    options = qdict_new();
-    qdict_put(options, QCOW2_OPT_LAZY_REFCOUNTS,
-              qbool_from_int(s->use_lazy_refcounts));
+    bdrv_invalidate_cache(bs->file, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
 
     memset(s, 0, sizeof(BDRVQcowState));
-    qcow2_open(bs, options, flags, NULL);
+    options = qdict_clone_shallow(bs->options);
+
+    ret = qcow2_open(bs, options, flags, &local_err);
+    if (local_err) {
+        error_setg(errp, "Could not reopen qcow2 layer: %s",
+                   error_get_pretty(local_err));
+        error_free(local_err);
+        return;
+    } else if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not reopen qcow2 layer");
+        return;
+    }
 
     QDECREF(options);
 

block/qed.c

@@ -1558,13 +1558,31 @@ static int bdrv_qed_change_backing_file(BlockDriverState *bs,
     return ret;
 }
 
-static void bdrv_qed_invalidate_cache(BlockDriverState *bs)
+static void bdrv_qed_invalidate_cache(BlockDriverState *bs, Error **errp)
 {
     BDRVQEDState *s = bs->opaque;
+    Error *local_err = NULL;
+    int ret;
 
     bdrv_qed_close(bs);
+
+    bdrv_invalidate_cache(bs->file, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
     memset(s, 0, sizeof(BDRVQEDState));
-    bdrv_qed_open(bs, NULL, bs->open_flags, NULL);
+    ret = bdrv_qed_open(bs, NULL, bs->open_flags, &local_err);
+    if (local_err) {
+        error_setg(errp, "Could not reopen qed layer: %s",
+                   error_get_pretty(local_err));
+        error_free(local_err);
+        return;
+    } else if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not reopen qed layer");
+        return;
+    }
 }
 
 static int bdrv_qed_check(BlockDriverState *bs, BdrvCheckResult *result,

block/quorum.c

@@ -625,13 +625,18 @@ static int64_t quorum_getlength(BlockDriverState *bs)
     return result;
 }
 
-static void quorum_invalidate_cache(BlockDriverState *bs)
+static void quorum_invalidate_cache(BlockDriverState *bs, Error **errp)
 {
     BDRVQuorumState *s = bs->opaque;
+    Error *local_err = NULL;
     int i;
 
     for (i = 0; i < s->num_children; i++) {
-        bdrv_invalidate_cache(s->bs[i]);
+        bdrv_invalidate_cache(s->bs[i], &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
     }
 }
 
@@ -852,8 +857,6 @@ static BlockDriver bdrv_quorum = {
     .bdrv_file_open     = quorum_open,
     .bdrv_close         = quorum_close,
 
-    .authorizations     = { true, true },
-
     .bdrv_co_flush_to_disk = quorum_co_flush,
 
     .bdrv_getlength     = quorum_getlength,
@@ -862,6 +865,7 @@ static BlockDriver bdrv_quorum = {
     .bdrv_aio_writev    = quorum_aio_writev,
     .bdrv_invalidate_cache = quorum_invalidate_cache,
 
+    .is_filter           = true,
     .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter,
 };
 

block/raw-posix.c

@@ -336,6 +336,17 @@ error:
 }
 #endif
 
+static void raw_parse_filename(const char *filename, QDict *options,
+                               Error **errp)
+{
+    /* The filename does not have to be prefixed by the protocol name, since
+     * "file" is the default protocol; therefore, the return value of this
+     * function call can be ignored. */
+    strstart(filename, "file:", &filename);
+
+    qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename)));
+}
+
 static QemuOptsList raw_runtime_opts = {
     .name = "raw",
     .head = QTAILQ_HEAD_INITIALIZER(raw_runtime_opts.head),
@@ -1230,6 +1241,8 @@ static int raw_create(const char *filename, QEMUOptionParameter *options,
     int result = 0;
     int64_t total_size = 0;
 
+    strstart(filename, "file:", &filename);
+
     /* Read out options */
     while (options && options->name) {
         if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
@@ -1412,6 +1425,7 @@ static BlockDriver bdrv_file = {
     .instance_size = sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
     .bdrv_probe = NULL, /* no probe for protocols */
+    .bdrv_parse_filename = raw_parse_filename,
     .bdrv_file_open = raw_open,
     .bdrv_reopen_prepare = raw_reopen_prepare,
     .bdrv_reopen_commit = raw_reopen_commit,
@@ -1547,6 +1561,15 @@ static int check_hdev_writable(BDRVRawState *s)
     return 0;
 }
 
+static void hdev_parse_filename(const char *filename, QDict *options,
+                                Error **errp)
+{
+    /* The prefix is optional, just as for "file". */
+    strstart(filename, "host_device:", &filename);
+
+    qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename)));
+}
+
 static int hdev_open(BlockDriverState *bs, QDict *options, int flags,
                      Error **errp)
 {
@@ -1753,6 +1776,18 @@ static int hdev_create(const char *filename, QEMUOptionParameter *options,
     int ret = 0;
     struct stat stat_buf;
     int64_t total_size = 0;
+    bool has_prefix;
+
+    /* This function is used by all three protocol block drivers and therefore
+     * any of these three prefixes may be given.
+     * The return value has to be stored somewhere, otherwise this is an error
+     * due to -Werror=unused-value. */
+    has_prefix =
+        strstart(filename, "host_device:", &filename) ||
+        strstart(filename, "host_cdrom:" , &filename) ||
+        strstart(filename, "host_floppy:", &filename);
+
+    (void)has_prefix;
 
     /* Read out options */
     while (options && options->name) {
@@ -1791,6 +1826,7 @@ static BlockDriver bdrv_host_device = {
     .instance_size      = sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
     .bdrv_probe_device  = hdev_probe_device,
+    .bdrv_parse_filename = hdev_parse_filename,
     .bdrv_file_open     = hdev_open,
     .bdrv_close         = raw_close,
     .bdrv_reopen_prepare = raw_reopen_prepare,
@@ -1820,6 +1856,15 @@ static BlockDriver bdrv_host_device = {
 };
 
 #ifdef __linux__
+static void floppy_parse_filename(const char *filename, QDict *options,
+                                  Error **errp)
+{
+    /* The prefix is optional, just as for "file". */
+    strstart(filename, "host_floppy:", &filename);
+
+    qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename)));
+}
+
 static int floppy_open(BlockDriverState *bs, QDict *options, int flags,
                        Error **errp)
 {
@@ -1925,6 +1970,7 @@ static BlockDriver bdrv_host_floppy = {
     .instance_size      = sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
     .bdrv_probe_device	= floppy_probe_device,
+    .bdrv_parse_filename = floppy_parse_filename,
     .bdrv_file_open     = floppy_open,
     .bdrv_close         = raw_close,
     .bdrv_reopen_prepare = raw_reopen_prepare,
@@ -1949,7 +1995,20 @@ static BlockDriver bdrv_host_floppy = {
     .bdrv_media_changed = floppy_media_changed,
     .bdrv_eject         = floppy_eject,
 };
+#endif
 
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+static void cdrom_parse_filename(const char *filename, QDict *options,
+                                 Error **errp)
+{
+    /* The prefix is optional, just as for "file". */
+    strstart(filename, "host_cdrom:", &filename);
+
+    qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename)));
+}
+#endif
+
+#ifdef __linux__
 static int cdrom_open(BlockDriverState *bs, QDict *options, int flags,
                       Error **errp)
 {
@@ -2036,6 +2095,7 @@ static BlockDriver bdrv_host_cdrom = {
     .instance_size      = sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
     .bdrv_probe_device	= cdrom_probe_device,
+    .bdrv_parse_filename = cdrom_parse_filename,
     .bdrv_file_open     = cdrom_open,
     .bdrv_close         = raw_close,
     .bdrv_reopen_prepare = raw_reopen_prepare,
@@ -2166,6 +2226,7 @@ static BlockDriver bdrv_host_cdrom = {
     .instance_size      = sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
     .bdrv_probe_device	= cdrom_probe_device,
+    .bdrv_parse_filename = cdrom_parse_filename,
     .bdrv_file_open     = cdrom_open,
     .bdrv_close         = raw_close,
     .bdrv_reopen_prepare = raw_reopen_prepare,

block/raw-win32.c

@@ -251,6 +251,17 @@ static void raw_parse_flags(int flags, int *access_flags, DWORD *overlapped)
     }
 }
 
+static void raw_parse_filename(const char *filename, QDict *options,
+                               Error **errp)
+{
+    /* The filename does not have to be prefixed by the protocol name, since
+     * "file" is the default protocol; therefore, the return value of this
+     * function call can be ignored. */
+    strstart(filename, "file:", &filename);
+
+    qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename)));
+}
+
 static QemuOptsList raw_runtime_opts = {
     .name = "raw",
     .head = QTAILQ_HEAD_INITIALIZER(raw_runtime_opts.head),
@@ -470,6 +481,8 @@ static int raw_create(const char *filename, QEMUOptionParameter *options,
     int fd;
     int64_t total_size = 0;
 
+    strstart(filename, "file:", &filename);
+
     /* Read out options */
     while (options && options->name) {
         if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
@@ -504,6 +517,7 @@ static BlockDriver bdrv_file = {
     .protocol_name	= "file",
     .instance_size	= sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
+    .bdrv_parse_filename = raw_parse_filename,
     .bdrv_file_open	= raw_open,
     .bdrv_close		= raw_close,
     .bdrv_create	= raw_create,
@@ -579,6 +593,15 @@ static int hdev_probe_device(const char *filename)
     return 0;
 }
 
+static void hdev_parse_filename(const char *filename, QDict *options,
+                                Error **errp)
+{
+    /* The prefix is optional, just as for "file". */
+    strstart(filename, "host_device:", &filename);
+
+    qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename)));
+}
+
 static int hdev_open(BlockDriverState *bs, QDict *options, int flags,
                      Error **errp)
 {
@@ -649,6 +672,7 @@ static BlockDriver bdrv_host_device = {
     .protocol_name	= "host_device",
     .instance_size	= sizeof(BDRVRawState),
     .bdrv_needs_filename = true,
+    .bdrv_parse_filename = hdev_parse_filename,
     .bdrv_probe_device	= hdev_probe_device,
     .bdrv_file_open	= hdev_open,
     .bdrv_close		= raw_close,

block/vhdx.h

@@ -61,7 +61,7 @@
 /* These structures are ones that are defined in the VHDX specification
  * document */
 
-#define VHDX_FILE_SIGNATURE 0x656C696678646876  /* "vhdxfile" in ASCII */
+#define VHDX_FILE_SIGNATURE 0x656C696678646876ULL  /* "vhdxfile" in ASCII */
 typedef struct VHDXFileIdentifier {
     uint64_t    signature;              /* "vhdxfile" in ASCII */
     uint16_t    creator[256];           /* optional; utf-16 string to identify
@@ -238,7 +238,7 @@ typedef struct QEMU_PACKED VHDXLogDataSector {
 /* upper 44 bits are the file offset in 1MB units lower 3 bits are the state
    other bits are reserved */
 #define VHDX_BAT_STATE_BIT_MASK 0x07
-#define VHDX_BAT_FILE_OFF_MASK  0xFFFFFFFFFFF00000 /* upper 44 bits */
+#define VHDX_BAT_FILE_OFF_MASK  0xFFFFFFFFFFF00000ULL /* upper 44 bits */
 typedef uint64_t VHDXBatEntry;
 
 /* ---- METADATA REGION STRUCTURES ---- */
@@ -247,7 +247,7 @@ typedef uint64_t VHDXBatEntry;
 #define VHDX_METADATA_MAX_ENTRIES 2047  /* not including the header */
 #define VHDX_METADATA_TABLE_MAX_SIZE \
     (VHDX_METADATA_ENTRY_SIZE * (VHDX_METADATA_MAX_ENTRIES+1))
-#define VHDX_METADATA_SIGNATURE 0x617461646174656D  /* "metadata" in ASCII */
+#define VHDX_METADATA_SIGNATURE 0x617461646174656DULL  /* "metadata" in ASCII */
 typedef struct QEMU_PACKED VHDXMetadataTableHeader {
     uint64_t    signature;              /* "metadata" in ASCII */
     uint16_t    reserved;

blockdev.c

@@ -2266,6 +2266,7 @@ void qmp_block_job_complete(const char *device, Error **errp)
 void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
 {
     QmpOutputVisitor *ov = qmp_output_visitor_new();
+    DriveInfo *dinfo;
     QObject *obj;
     QDict *qdict;
     Error *local_err = NULL;
@@ -2282,8 +2283,10 @@ void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
      *
      * For now, simply forbidding the combination for all drivers will do. */
     if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) {
-        bool direct = options->cache->has_direct && options->cache->direct;
-        if (!options->has_cache && !direct) {
+        bool direct = options->has_cache &&
+                      options->cache->has_direct &&
+                      options->cache->direct;
+        if (!direct) {
             error_setg(errp, "aio=native requires cache.direct=true");
             goto fail;
         }
@@ -2301,12 +2304,18 @@ void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
 
     qdict_flatten(qdict);
 
-    blockdev_init(NULL, qdict, &local_err);
+    dinfo = blockdev_init(NULL, qdict, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         goto fail;
     }
 
+    if (bdrv_key_required(dinfo->bdrv)) {
+        drive_uninit(dinfo);
+        error_setg(errp, "blockdev-add doesn't support encrypted devices");
+        goto fail;
+    }
+
 fail:
     qmp_output_visitor_cleanup(ov);
 }

bsd-user/main.c

@@ -1000,7 +1000,7 @@ int main(int argc, char **argv)
     memset(ts, 0, sizeof(TaskState));
     init_task_state(ts);
     ts->info = info;
-    env->opaque = ts;
+    cpu->opaque = ts;
 
 #if defined(TARGET_I386)
     cpu_x86_set_cpl(env, 3);

configure

@@ -14,13 +14,14 @@ fi
 TMPC="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.c"
 TMPB="qemu-conf-${RANDOM}-$$-${RANDOM}"
 TMPO="${TMPDIR1}/${TMPB}.o"
+TMPCXX="${TMPDIR1}/${TMPB}.cxx"
 TMPL="${TMPDIR1}/${TMPB}.lo"
 TMPA="${TMPDIR1}/lib${TMPB}.la"
 TMPE="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.exe"
 
 # NB: do not call "exit" in the trap handler; this is buggy with some shells;
 # see <1285349658-3122-1-git-send-email-loic.minier@linaro.org>
-trap "rm -f $TMPC $TMPO $TMPE" EXIT INT QUIT TERM
+trap "rm -f $TMPC $TMPO $TMPCXX $TMPE" EXIT INT QUIT TERM
 rm -f config.log
 
 # Print a helpful header at the top of config.log
@@ -30,19 +31,6 @@ printf " '%s'" "$0" "$@" >> config.log
 echo >> config.log
 echo "#" >> config.log
 
-# Save the configure command line for later reuse.
-cat <<EOD >config.status
-#!/bin/sh
-# Generated by configure.
-# Run this file to recreate the current configuration.
-# Compiler output produced by configure, useful for debugging
-# configure, is in config.log if it exists.
-EOD
-printf "exec" >>config.status
-printf " '%s'" "$0" "$@" >>config.status
-echo >>config.status
-chmod +x config.status
-
 error_exit() {
     echo
     echo "ERROR: $1"
@@ -54,10 +42,13 @@ error_exit() {
     exit 1
 }
 
-do_cc() {
-    # Run the compiler, capturing its output to the log.
-    echo $cc "$@" >> config.log
-    $cc "$@" >> config.log 2>&1 || return $?
+do_compiler() {
+    # Run the compiler, capturing its output to the log. First argument
+    # is compiler binary to execute.
+    local compiler="$1"
+    shift
+    echo $compiler "$@" >> config.log
+    $compiler "$@" >> config.log 2>&1 || return $?
     # Test passed. If this is an --enable-werror build, rerun
     # the test with -Werror and bail out if it fails. This
     # makes warning-generating-errors in configure test code
@@ -71,14 +62,39 @@ do_cc() {
            return 0
         ;;
     esac
-    echo $cc -Werror "$@" >> config.log
-    $cc -Werror "$@" >> config.log 2>&1 && return $?
+    echo $compiler -Werror "$@" >> config.log
+    $compiler -Werror "$@" >> config.log 2>&1 && return $?
     error_exit "configure test passed without -Werror but failed with -Werror." \
         "This is probably a bug in the configure script. The failing command" \
         "will be at the bottom of config.log." \
         "You can run configure with --disable-werror to bypass this check."
 }
 
+do_cc() {
+    do_compiler "$cc" "$@"
+}
+
+do_cxx() {
+    do_compiler "$cxx" "$@"
+}
+
+update_cxxflags() {
+    # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
+    # options which some versions of GCC's C++ compiler complain about
+    # because they only make sense for C programs.
+    QEMU_CXXFLAGS=
+    for arg in $QEMU_CFLAGS; do
+        case $arg in
+            -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
+            -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
+                ;;
+            *)
+                QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
+                ;;
+        esac
+    done
+}
+
 compile_object() {
   do_cc $QEMU_CFLAGS -c -o $TMPO $TMPC
 }
@@ -373,7 +389,7 @@ sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 ARFLAGS="${ARFLAGS-rv}"
 
 # default flags for all hosts
-QEMU_CFLAGS="-fno-strict-aliasing $QEMU_CFLAGS"
+QEMU_CFLAGS="-fno-strict-aliasing -fno-common $QEMU_CFLAGS"
 QEMU_CFLAGS="-Wall -Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
@@ -1340,6 +1356,19 @@ if test "$ARCH" = "unknown"; then
     fi
 fi
 
+# Consult white-list to determine whether to enable werror
+# by default.  Only enable by default for git builds
+z_version=`cut -f3 -d. $source_path/VERSION`
+
+if test -z "$werror" ; then
+    if test -d "$source_path/.git" -a \
+        "$linux" = "yes" ; then
+        werror="yes"
+    else
+        werror="no"
+    fi
+fi
+
 # check that the C compiler works.
 cat > $TMPC <<EOF
 int main(void) { return 0; }
@@ -1360,14 +1389,16 @@ EOF
 
     compile_object
 
-    cat > $TMPC <<EOF
+    cat > $TMPCXX <<EOF
 extern "C" {
    int c_function(void);
 }
 int c_function(void) { return 42; }
 EOF
 
-    if (cc=$cxx do_cc $QEMU_CFLAGS -o $TMPE $TMPC $TMPO $LDFLAGS); then
+    update_cxxflags
+
+    if do_cxx $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $LDFLAGS; then
         # C++ compiler $cxx works ok with C compiler $cc
         :
     else
@@ -1380,19 +1411,6 @@ else
     cxx=
 fi
 
-# Consult white-list to determine whether to enable werror
-# by default.  Only enable by default for git builds
-z_version=`cut -f3 -d. $source_path/VERSION`
-
-if test -z "$werror" ; then
-    if test -d "$source_path/.git" -a \
-        "$linux" = "yes" ; then
-        werror="yes"
-    else
-        werror="no"
-    fi
-fi
-
 gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits"
 gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers $gcc_flags"
 gcc_flags="-Wmissing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"
@@ -3804,6 +3822,11 @@ fi
 
 int128=no
 cat > $TMPC << EOF
+#if defined(__clang_major__) && defined(__clang_minor__)
+# if ((__clang_major__ < 3) || (__clang_major__ == 3) && (__clang_minor__ < 2))
+#  error __int128_t does not work in CLANG before 3.2
+# endif
+#endif
 __int128_t a;
 __uint128_t b;
 int main (void) {
@@ -3845,7 +3868,7 @@ fi
 ##########################################
 # Do we have libnfs
 if test "$libnfs" != "no" ; then
-  if $pkg_config --atleast-version=1.9.2 libnfs; then
+  if $pkg_config --atleast-version=1.9.3 libnfs; then
     libnfs="yes"
     libnfs_libs=$($pkg_config --libs libnfs)
     LIBS="$LIBS $libnfs_libs"
@@ -4076,7 +4099,11 @@ echo "vhost-net support $vhost_net"
 echo "vhost-scsi support $vhost_scsi"
 echo "Trace backend     $trace_backend"
 echo "Trace output file $trace_file-<pid>"
+if test "$spice" = "yes"; then
 echo "spice support     $spice ($spice_protocol_version/$spice_server_version)"
+else
+echo "spice support     $spice"
+fi
 echo "rbd support       $rbd"
 echo "xfsctl support    $xfs"
 echo "nss used          $smartcard_nss"
@@ -4937,6 +4964,12 @@ for i in $ARCH $TARGET_BASE_ARCH ; do
     echo "CONFIG_ALPHA_DIS=y"  >> $config_target_mak
     echo "CONFIG_ALPHA_DIS=y"  >> config-all-disas.mak
   ;;
+  aarch64)
+    if test -n "${cxx}"; then
+      echo "CONFIG_ARM_A64_DIS=y"  >> $config_target_mak
+      echo "CONFIG_ARM_A64_DIS=y"  >> config-all-disas.mak
+    fi
+  ;;
   arm)
     echo "CONFIG_ARM_DIS=y"  >> $config_target_mak
     echo "CONFIG_ARM_DIS=y"  >> config-all-disas.mak
@@ -5105,3 +5138,17 @@ done
 if test "$docs" = "yes" ; then
   mkdir -p QMP
 fi
+
+# Save the configure command line for later reuse.
+cat <<EOD >config.status
+#!/bin/sh
+# Generated by configure.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+EOD
+printf "exec" >>config.status
+printf " '%s'" "$0" "$@" >>config.status
+echo >>config.status
+chmod +x config.status
+

cpu-exec.c

@@ -23,29 +23,22 @@
 #include "qemu/atomic.h"
 #include "sysemu/qtest.h"
 
-bool qemu_cpu_has_work(CPUState *cpu)
+void cpu_loop_exit(CPUState *cpu)
 {
-    return cpu_has_work(cpu);
-}
-
-void cpu_loop_exit(CPUArchState *env)
-{
-    CPUState *cpu = ENV_GET_CPU(env);
-
     cpu->current_tb = NULL;
-    siglongjmp(env->jmp_env, 1);
+    siglongjmp(cpu->jmp_env, 1);
 }
 
 /* exit the current TB from a signal handler. The host registers are
    restored in a state compatible with the CPU emulator
  */
 #if defined(CONFIG_SOFTMMU)
-void cpu_resume_from_signal(CPUArchState *env, void *puc)
+void cpu_resume_from_signal(CPUState *cpu, void *puc)
 {
     /* XXX: restore cpu registers saved in host registers */
 
-    env->exception_index = -1;
-    siglongjmp(env->jmp_env, 1);
+    cpu->exception_index = -1;
+    siglongjmp(cpu->jmp_env, 1);
 }
 #endif
 
@@ -108,7 +101,7 @@ static void cpu_exec_nocache(CPUArchState *env, int max_cycles,
     if (max_cycles > CF_COUNT_MASK)
         max_cycles = CF_COUNT_MASK;
 
-    tb = tb_gen_code(env, orig_tb->pc, orig_tb->cs_base, orig_tb->flags,
+    tb = tb_gen_code(cpu, orig_tb->pc, orig_tb->cs_base, orig_tb->flags,
                      max_cycles);
     cpu->current_tb = tb;
     /* execute the generated code */
@@ -123,6 +116,7 @@ static TranslationBlock *tb_find_slow(CPUArchState *env,
                                       target_ulong cs_base,
                                       uint64_t flags)
 {
+    CPUState *cpu = ENV_GET_CPU(env);
     TranslationBlock *tb, **ptb1;
     unsigned int h;
     tb_page_addr_t phys_pc, phys_page1;
@@ -160,7 +154,7 @@ static TranslationBlock *tb_find_slow(CPUArchState *env,
     }
  not_found:
    /* if no translated code available, then translate it now */
-    tb = tb_gen_code(env, pc, cs_base, flags, 0);
+    tb = tb_gen_code(cpu, pc, cs_base, flags, 0);
 
  found:
     /* Move the last found TB to the head of the list */
@@ -170,12 +164,13 @@ static TranslationBlock *tb_find_slow(CPUArchState *env,
         tcg_ctx.tb_ctx.tb_phys_hash[h] = tb;
     }
     /* we add the TB in the virtual pc hash table */
-    env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
+    cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
     return tb;
 }
 
 static inline TranslationBlock *tb_find_fast(CPUArchState *env)
 {
+    CPUState *cpu = ENV_GET_CPU(env);
     TranslationBlock *tb;
     target_ulong cs_base, pc;
     int flags;
@@ -184,7 +179,7 @@ static inline TranslationBlock *tb_find_fast(CPUArchState *env)
        always be the same before a given translated block
        is executed. */
     cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
-    tb = env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)];
+    tb = cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)];
     if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base ||
                  tb->flags != flags)) {
         tb = tb_find_slow(env, pc, cs_base, flags);
@@ -201,10 +196,11 @@ void cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
 
 static void cpu_handle_debug_exception(CPUArchState *env)
 {
+    CPUState *cpu = ENV_GET_CPU(env);
     CPUWatchpoint *wp;
 
-    if (!env->watchpoint_hit) {
-        QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
+    if (!cpu->watchpoint_hit) {
+        QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
             wp->flags &= ~BP_WATCHPOINT_HIT;
         }
     }
@@ -283,16 +279,16 @@ int cpu_exec(CPUArchState *env)
 #else
 #error unsupported target CPU
 #endif
-    env->exception_index = -1;
+    cpu->exception_index = -1;
 
     /* prepare setjmp context for exception handling */
     for(;;) {
-        if (sigsetjmp(env->jmp_env, 0) == 0) {
+        if (sigsetjmp(cpu->jmp_env, 0) == 0) {
             /* if an exception is pending, we execute it here */
-            if (env->exception_index >= 0) {
-                if (env->exception_index >= EXCP_INTERRUPT) {
+            if (cpu->exception_index >= 0) {
+                if (cpu->exception_index >= EXCP_INTERRUPT) {
                     /* exit request from the cpu execution loop */
-                    ret = env->exception_index;
+                    ret = cpu->exception_index;
                     if (ret == EXCP_DEBUG) {
                         cpu_handle_debug_exception(env);
                     }
@@ -305,11 +301,11 @@ int cpu_exec(CPUArchState *env)
 #if defined(TARGET_I386)
                     cc->do_interrupt(cpu);
 #endif
-                    ret = env->exception_index;
+                    ret = cpu->exception_index;
                     break;
 #else
                     cc->do_interrupt(cpu);
-                    env->exception_index = -1;
+                    cpu->exception_index = -1;
 #endif
                 }
             }
@@ -324,8 +320,8 @@ int cpu_exec(CPUArchState *env)
                     }
                     if (interrupt_request & CPU_INTERRUPT_DEBUG) {
                         cpu->interrupt_request &= ~CPU_INTERRUPT_DEBUG;
-                        env->exception_index = EXCP_DEBUG;
-                        cpu_loop_exit(env);
+                        cpu->exception_index = EXCP_DEBUG;
+                        cpu_loop_exit(cpu);
                     }
 #if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_MIPS) || \
     defined(TARGET_PPC) || defined(TARGET_ALPHA) || defined(TARGET_CRIS) || \
@@ -333,8 +329,8 @@ int cpu_exec(CPUArchState *env)
                     if (interrupt_request & CPU_INTERRUPT_HALT) {
                         cpu->interrupt_request &= ~CPU_INTERRUPT_HALT;
                         cpu->halted = 1;
-                        env->exception_index = EXCP_HLT;
-                        cpu_loop_exit(env);
+                        cpu->exception_index = EXCP_HLT;
+                        cpu_loop_exit(cpu);
                     }
 #endif
 #if defined(TARGET_I386)
@@ -348,8 +344,8 @@ int cpu_exec(CPUArchState *env)
                             cpu_svm_check_intercept_param(env, SVM_EXIT_INIT,
                                                           0);
                             do_cpu_init(x86_cpu);
-                            env->exception_index = EXCP_HALTED;
-                            cpu_loop_exit(env);
+                            cpu->exception_index = EXCP_HALTED;
+                            cpu_loop_exit(cpu);
                     } else if (interrupt_request & CPU_INTERRUPT_SIPI) {
                             do_cpu_sipi(x86_cpu);
                     } else if (env->hflags2 & HF2_GIF_MASK) {
@@ -420,7 +416,7 @@ int cpu_exec(CPUArchState *env)
 #elif defined(TARGET_LM32)
                     if ((interrupt_request & CPU_INTERRUPT_HARD)
                         && (env->ie & IE_IE)) {
-                        env->exception_index = EXCP_IRQ;
+                        cpu->exception_index = EXCP_IRQ;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
@@ -429,7 +425,7 @@ int cpu_exec(CPUArchState *env)
                         && (env->sregs[SR_MSR] & MSR_IE)
                         && !(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP))
                         && !(env->iflags & (D_FLAG | IMM_FLAG))) {
-                        env->exception_index = EXCP_IRQ;
+                        cpu->exception_index = EXCP_IRQ;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
@@ -437,7 +433,7 @@ int cpu_exec(CPUArchState *env)
                     if ((interrupt_request & CPU_INTERRUPT_HARD) &&
                         cpu_mips_hw_interrupts_pending(env)) {
                         /* Raise it */
-                        env->exception_index = EXCP_EXT_INTERRUPT;
+                        cpu->exception_index = EXCP_EXT_INTERRUPT;
                         env->error_code = 0;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
@@ -454,7 +450,7 @@ int cpu_exec(CPUArchState *env)
                             idx = EXCP_TICK;
                         }
                         if (idx >= 0) {
-                            env->exception_index = idx;
+                            cpu->exception_index = idx;
                             cc->do_interrupt(cpu);
                             next_tb = 0;
                         }
@@ -469,7 +465,7 @@ int cpu_exec(CPUArchState *env)
                             if (((type == TT_EXTINT) &&
                                   cpu_pil_allowed(env, pil)) ||
                                   type != TT_EXTINT) {
-                                env->exception_index = env->interrupt_index;
+                                cpu->exception_index = env->interrupt_index;
                                 cc->do_interrupt(cpu);
                                 next_tb = 0;
                             }
@@ -478,7 +474,7 @@ int cpu_exec(CPUArchState *env)
 #elif defined(TARGET_ARM)
                     if (interrupt_request & CPU_INTERRUPT_FIQ
                         && !(env->daif & PSTATE_F)) {
-                        env->exception_index = EXCP_FIQ;
+                        cpu->exception_index = EXCP_FIQ;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
@@ -494,14 +490,14 @@ int cpu_exec(CPUArchState *env)
                     if (interrupt_request & CPU_INTERRUPT_HARD
                         && ((IS_M(env) && env->regs[15] < 0xfffffff0)
                             || !(env->daif & PSTATE_I))) {
-                        env->exception_index = EXCP_IRQ;
+                        cpu->exception_index = EXCP_IRQ;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
 #elif defined(TARGET_UNICORE32)
                     if (interrupt_request & CPU_INTERRUPT_HARD
                         && !(env->uncached_asr & ASR_I)) {
-                        env->exception_index = UC32_EXCP_INTR;
+                        cpu->exception_index = UC32_EXCP_INTR;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
@@ -536,7 +532,7 @@ int cpu_exec(CPUArchState *env)
                             }
                         }
                         if (idx >= 0) {
-                            env->exception_index = idx;
+                            cpu->exception_index = idx;
                             env->error_code = 0;
                             cc->do_interrupt(cpu);
                             next_tb = 0;
@@ -546,7 +542,7 @@ int cpu_exec(CPUArchState *env)
                     if (interrupt_request & CPU_INTERRUPT_HARD
                         && (env->pregs[PR_CCS] & I_FLAG)
                         && !env->locked_irq) {
-                        env->exception_index = EXCP_IRQ;
+                        cpu->exception_index = EXCP_IRQ;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
@@ -558,7 +554,7 @@ int cpu_exec(CPUArchState *env)
                             m_flag_archval = M_FLAG_V32;
                         }
                         if ((env->pregs[PR_CCS] & m_flag_archval)) {
-                            env->exception_index = EXCP_NMI;
+                            cpu->exception_index = EXCP_NMI;
                             cc->do_interrupt(cpu);
                             next_tb = 0;
                         }
@@ -572,7 +568,7 @@ int cpu_exec(CPUArchState *env)
                            hardware doesn't rely on this, so we
                            provide/save the vector when the interrupt is
                            first signalled.  */
-                        env->exception_index = env->pending_vector;
+                        cpu->exception_index = env->pending_vector;
                         do_interrupt_m68k_hardirq(env);
                         next_tb = 0;
                     }
@@ -584,7 +580,7 @@ int cpu_exec(CPUArchState *env)
                     }
 #elif defined(TARGET_XTENSA)
                     if (interrupt_request & CPU_INTERRUPT_HARD) {
-                        env->exception_index = EXC_IRQ;
+                        cpu->exception_index = EXC_IRQ;
                         cc->do_interrupt(cpu);
                         next_tb = 0;
                     }
@@ -600,8 +596,8 @@ int cpu_exec(CPUArchState *env)
                 }
                 if (unlikely(cpu->exit_request)) {
                     cpu->exit_request = 0;
-                    env->exception_index = EXCP_INTERRUPT;
-                    cpu_loop_exit(env);
+                    cpu->exception_index = EXCP_INTERRUPT;
+                    cpu_loop_exit(cpu);
                 }
                 spin_lock(&tcg_ctx.tb_ctx.tb_lock);
                 tb = tb_find_fast(env);
@@ -654,25 +650,25 @@ int cpu_exec(CPUArchState *env)
                         /* Instruction counter expired.  */
                         int insns_left;
                         tb = (TranslationBlock *)(next_tb & ~TB_EXIT_MASK);
-                        insns_left = env->icount_decr.u32;
-                        if (env->icount_extra && insns_left >= 0) {
+                        insns_left = cpu->icount_decr.u32;
+                        if (cpu->icount_extra && insns_left >= 0) {
                             /* Refill decrementer and continue execution.  */
-                            env->icount_extra += insns_left;
-                            if (env->icount_extra > 0xffff) {
+                            cpu->icount_extra += insns_left;
+                            if (cpu->icount_extra > 0xffff) {
                                 insns_left = 0xffff;
                             } else {
-                                insns_left = env->icount_extra;
+                                insns_left = cpu->icount_extra;
                             }
-                            env->icount_extra -= insns_left;
-                            env->icount_decr.u16.low = insns_left;
+                            cpu->icount_extra -= insns_left;
+                            cpu->icount_decr.u16.low = insns_left;
                         } else {
                             if (insns_left > 0) {
                                 /* Execute remaining instructions.  */
                                 cpu_exec_nocache(env, insns_left, tb);
                             }
-                            env->exception_index = EXCP_INTERRUPT;
+                            cpu->exception_index = EXCP_INTERRUPT;
                             next_tb = 0;
-                            cpu_loop_exit(env);
+                            cpu_loop_exit(cpu);
                         }
                         break;
                     }

cpus.c

@@ -76,7 +76,7 @@ static bool cpu_thread_is_idle(CPUState *cpu)
     if (cpu_is_stopped(cpu)) {
         return true;
     }
-    if (!cpu->halted || qemu_cpu_has_work(cpu) ||
+    if (!cpu->halted || cpu_has_work(cpu) ||
         kvm_halt_in_kernel()) {
         return false;
     }
@@ -139,11 +139,10 @@ static int64_t cpu_get_icount_locked(void)
 
     icount = qemu_icount;
     if (cpu) {
-        CPUArchState *env = cpu->env_ptr;
-        if (!can_do_io(env)) {
+        if (!cpu_can_do_io(cpu)) {
             fprintf(stderr, "Bad clock read\n");
         }
-        icount -= (env->icount_decr.u16.low + env->icount_extra);
+        icount -= (cpu->icount_decr.u16.low + cpu->icount_extra);
     }
     return qemu_icount_bias + (icount << icount_time_shift);
 }
@@ -1117,8 +1116,13 @@ void resume_all_vcpus(void)
     }
 }
 
+/* For temporary buffers for forming a name */
+#define VCPU_THREAD_NAME_SIZE 16
+
 static void qemu_tcg_init_vcpu(CPUState *cpu)
 {
+    char thread_name[VCPU_THREAD_NAME_SIZE];
+
     tcg_cpu_address_space_init(cpu, cpu->as);
 
     /* share a single thread for all cpus with TCG */
@@ -1127,8 +1131,10 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
         cpu->halt_cond = g_malloc0(sizeof(QemuCond));
         qemu_cond_init(cpu->halt_cond);
         tcg_halt_cond = cpu->halt_cond;
-        qemu_thread_create(cpu->thread, qemu_tcg_cpu_thread_fn, cpu,
-                           QEMU_THREAD_JOINABLE);
+        snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG",
+                 cpu->cpu_index);
+        qemu_thread_create(cpu->thread, thread_name, qemu_tcg_cpu_thread_fn,
+                           cpu, QEMU_THREAD_JOINABLE);
 #ifdef _WIN32
         cpu->hThread = qemu_thread_get_handle(cpu->thread);
 #endif
@@ -1144,11 +1150,15 @@ static void qemu_tcg_init_vcpu(CPUState *cpu)
 
 static void qemu_kvm_start_vcpu(CPUState *cpu)
 {
+    char thread_name[VCPU_THREAD_NAME_SIZE];
+
     cpu->thread = g_malloc0(sizeof(QemuThread));
     cpu->halt_cond = g_malloc0(sizeof(QemuCond));
     qemu_cond_init(cpu->halt_cond);
-    qemu_thread_create(cpu->thread, qemu_kvm_cpu_thread_fn, cpu,
-                       QEMU_THREAD_JOINABLE);
+    snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM",
+             cpu->cpu_index);
+    qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn,
+                       cpu, QEMU_THREAD_JOINABLE);
     while (!cpu->created) {
         qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
     }
@@ -1156,10 +1166,14 @@ static void qemu_kvm_start_vcpu(CPUState *cpu)
 
 static void qemu_dummy_start_vcpu(CPUState *cpu)
 {
+    char thread_name[VCPU_THREAD_NAME_SIZE];
+
     cpu->thread = g_malloc0(sizeof(QemuThread));
     cpu->halt_cond = g_malloc0(sizeof(QemuCond));
     qemu_cond_init(cpu->halt_cond);
-    qemu_thread_create(cpu->thread, qemu_dummy_cpu_thread_fn, cpu,
+    snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY",
+             cpu->cpu_index);
+    qemu_thread_create(cpu->thread, thread_name, qemu_dummy_cpu_thread_fn, cpu,
                        QEMU_THREAD_JOINABLE);
     while (!cpu->created) {
         qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
@@ -1221,6 +1235,7 @@ int vm_stop_force_state(RunState state)
 
 static int tcg_cpu_exec(CPUArchState *env)
 {
+    CPUState *cpu = ENV_GET_CPU(env);
     int ret;
 #ifdef CONFIG_PROFILER
     int64_t ti;
@@ -1233,9 +1248,9 @@ static int tcg_cpu_exec(CPUArchState *env)
         int64_t count;
         int64_t deadline;
         int decr;
-        qemu_icount -= (env->icount_decr.u16.low + env->icount_extra);
-        env->icount_decr.u16.low = 0;
-        env->icount_extra = 0;
+        qemu_icount -= (cpu->icount_decr.u16.low + cpu->icount_extra);
+        cpu->icount_decr.u16.low = 0;
+        cpu->icount_extra = 0;
         deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
 
         /* Maintain prior (possibly buggy) behaviour where if no deadline
@@ -1251,8 +1266,8 @@ static int tcg_cpu_exec(CPUArchState *env)
         qemu_icount += count;
         decr = (count > 0xffff) ? 0xffff : count;
         count -= decr;
-        env->icount_decr.u16.low = decr;
-        env->icount_extra = count;
+        cpu->icount_decr.u16.low = decr;
+        cpu->icount_extra = count;
     }
     ret = cpu_exec(env);
 #ifdef CONFIG_PROFILER
@@ -1261,10 +1276,9 @@ static int tcg_cpu_exec(CPUArchState *env)
     if (use_icount) {
         /* Fold pending instructions back into the
            instruction counter, and clear the interrupt flag.  */
-        qemu_icount -= (env->icount_decr.u16.low
-                        + env->icount_extra);
-        env->icount_decr.u32 = 0;
-        env->icount_extra = 0;
+        qemu_icount -= (cpu->icount_decr.u16.low + cpu->icount_extra);
+        cpu->icount_decr.u32 = 0;
+        cpu->icount_extra = 0;
     }
     return ret;
 }

cputlb.c

@@ -46,9 +46,9 @@ int tlb_flush_count;
  * entries from the TLB at any time, so flushing more entries than
  * required is only an efficiency issue, not a correctness issue.
  */
-void tlb_flush(CPUArchState *env, int flush_global)
+void tlb_flush(CPUState *cpu, int flush_global)
 {
-    CPUState *cpu = ENV_GET_CPU(env);
+    CPUArchState *env = cpu->env_ptr;
 
 #if defined(DEBUG_TLB)
     printf("tlb_flush:\n");
@@ -58,7 +58,7 @@ void tlb_flush(CPUArchState *env, int flush_global)
     cpu->current_tb = NULL;
 
     memset(env->tlb_table, -1, sizeof(env->tlb_table));
-    memset(env->tb_jmp_cache, 0, sizeof(env->tb_jmp_cache));
+    memset(cpu->tb_jmp_cache, 0, sizeof(cpu->tb_jmp_cache));
 
     env->tlb_flush_addr = -1;
     env->tlb_flush_mask = 0;
@@ -77,9 +77,9 @@ static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr)
     }
 }
 
-void tlb_flush_page(CPUArchState *env, target_ulong addr)
+void tlb_flush_page(CPUState *cpu, target_ulong addr)
 {
-    CPUState *cpu = ENV_GET_CPU(env);
+    CPUArchState *env = cpu->env_ptr;
     int i;
     int mmu_idx;
 
@@ -93,7 +93,7 @@ void tlb_flush_page(CPUArchState *env, target_ulong addr)
                TARGET_FMT_lx "/" TARGET_FMT_lx ")\n",
                env->tlb_flush_addr, env->tlb_flush_mask);
 #endif
-        tlb_flush(env, 1);
+        tlb_flush(cpu, 1);
         return;
     }
     /* must reset current TB so that interrupts cannot modify the
@@ -106,7 +106,7 @@ void tlb_flush_page(CPUArchState *env, target_ulong addr)
         tlb_flush_entry(&env->tlb_table[mmu_idx][i], addr);
     }
 
-    tb_flush_jmp_cache(env, addr);
+    tb_flush_jmp_cache(cpu, addr);
 }
 
 /* update the TLBs so that writes to code in the virtual page 'addr'
@@ -119,7 +119,7 @@ void tlb_protect_code(ram_addr_t ram_addr)
 
 /* update the TLB so that writes in physical page 'phys_addr' are no longer
    tested for self modifying code */
-void tlb_unprotect_code_phys(CPUArchState *env, ram_addr_t ram_addr,
+void tlb_unprotect_code_phys(CPUState *cpu, ram_addr_t ram_addr,
                              target_ulong vaddr)
 {
     cpu_physical_memory_set_dirty_flag(ram_addr, DIRTY_MEMORY_CODE);
@@ -221,10 +221,11 @@ static void tlb_add_large_page(CPUArchState *env, target_ulong vaddr,
 /* Add a new TLB entry. At most one entry for a given virtual address
    is permitted. Only a single TARGET_PAGE_SIZE region is mapped, the
    supplied size is only used by tlb_flush_page.  */
-void tlb_set_page(CPUArchState *env, target_ulong vaddr,
+void tlb_set_page(CPUState *cpu, target_ulong vaddr,
                   hwaddr paddr, int prot,
                   int mmu_idx, target_ulong size)
 {
+    CPUArchState *env = cpu->env_ptr;
     MemoryRegionSection *section;
     unsigned int index;
     target_ulong address;
@@ -232,7 +233,6 @@ void tlb_set_page(CPUArchState *env, target_ulong vaddr,
     uintptr_t addend;
     CPUTLBEntry *te;
     hwaddr iotlb, xlat, sz;
-    CPUState *cpu = ENV_GET_CPU(env);
 
     assert(size >= TARGET_PAGE_SIZE);
     if (size != TARGET_PAGE_SIZE) {
@@ -261,7 +261,7 @@ void tlb_set_page(CPUArchState *env, target_ulong vaddr,
     }
 
     code_address = address;
-    iotlb = memory_region_section_get_iotlb(env, section, vaddr, paddr, xlat,
+    iotlb = memory_region_section_get_iotlb(cpu, section, vaddr, paddr, xlat,
                                             prot, &address);
 
     index = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
@@ -322,7 +322,7 @@ tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr)
         if (cc->do_unassigned_access) {
             cc->do_unassigned_access(cpu, addr, false, true, 0, 4);
         } else {
-            cpu_abort(env1, "Trying to execute code outside RAM or ROM at 0x"
+            cpu_abort(cpu, "Trying to execute code outside RAM or ROM at 0x"
                       TARGET_FMT_lx "\n", addr);
         }
     }

default-configs/ppc-softmmu.mak

@@ -47,4 +47,5 @@ CONFIG_E500=y
 CONFIG_OPENPIC_KVM=$(and $(CONFIG_E500),$(CONFIG_KVM))
 # For PReP
 CONFIG_MC146818RTC=y
+CONFIG_ETSEC=y
 CONFIG_ISA_TESTDEV=y

device-hotplug.c

@@ -33,12 +33,14 @@ DriveInfo *add_init_drive(const char *optstr)
 {
     DriveInfo *dinfo;
     QemuOpts *opts;
+    MachineClass *mc;
 
     opts = drive_def(optstr);
     if (!opts)
         return NULL;
 
-    dinfo = drive_init(opts, current_machine->block_default_type);
+    mc = MACHINE_GET_CLASS(current_machine);
+    dinfo = drive_init(opts, mc->qemu_machine->block_default_type);
     if (!dinfo) {
         qemu_opts_del(opts);
         return NULL;

disas/libvixl/a64/disasm-a64.cc

@@ -1342,7 +1342,7 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
         ASSERT(format[5] == 'L');
         AppendToOutput("#0x%" PRIx64, instr->ImmMoveWide());
         if (instr->ShiftMoveWide() > 0) {
-          AppendToOutput(", lsl #%d", 16 * instr->ShiftMoveWide());
+          AppendToOutput(", lsl #%" PRId64, 16 * instr->ShiftMoveWide());
         }
       }
       return 8;
@@ -1391,7 +1391,7 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
     }
     case 'F': {  // IFPSingle, IFPDouble or IFPFBits.
       if (format[3] == 'F') {  // IFPFbits.
-        AppendToOutput("#%d", 64 - instr->FPScale());
+        AppendToOutput("#%" PRId64, 64 - instr->FPScale());
         return 8;
       } else {
         AppendToOutput("#0x%" PRIx64 " (%.4f)", instr->ImmFP(),
@@ -1412,23 +1412,23 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
       return 5;
     }
     case 'P': {  // IP - Conditional compare.
-      AppendToOutput("#%d", instr->ImmCondCmp());
+      AppendToOutput("#%" PRId64, instr->ImmCondCmp());
       return 2;
     }
     case 'B': {  // Bitfields.
       return SubstituteBitfieldImmediateField(instr, format);
     }
     case 'E': {  // IExtract.
-      AppendToOutput("#%d", instr->ImmS());
+      AppendToOutput("#%" PRId64, instr->ImmS());
       return 8;
     }
     case 'S': {  // IS - Test and branch bit.
-      AppendToOutput("#%d", (instr->ImmTestBranchBit5() << 5) |
-                            instr->ImmTestBranchBit40());
+      AppendToOutput("#%" PRId64, (instr->ImmTestBranchBit5() << 5) |
+                                  instr->ImmTestBranchBit40());
       return 2;
     }
     case 'D': {  // IDebug - HLT and BRK instructions.
-      AppendToOutput("#0x%x", instr->ImmException());
+      AppendToOutput("#0x%" PRIx64, instr->ImmException());
       return 6;
     }
     default: {
@@ -1598,12 +1598,12 @@ int Disassembler::SubstituteExtendField(Instruction* instr,
       (((instr->ExtendMode() == UXTW) && (instr->SixtyFourBits() == 0)) ||
        (instr->ExtendMode() == UXTX))) {
     if (instr->ImmExtendShift() > 0) {
-      AppendToOutput(", lsl #%d", instr->ImmExtendShift());
+      AppendToOutput(", lsl #%" PRId64, instr->ImmExtendShift());
     }
   } else {
     AppendToOutput(", %s", extend_mode[instr->ExtendMode()]);
     if (instr->ImmExtendShift() > 0) {
-      AppendToOutput(" #%d", instr->ImmExtendShift());
+      AppendToOutput(" #%" PRId64, instr->ImmExtendShift());
     }
   }
   return 3;
@@ -1632,7 +1632,7 @@ int Disassembler::SubstituteLSRegOffsetField(Instruction* instr,
   if (!((ext == UXTX) && (shift == 0))) {
     AppendToOutput(", %s", extend_mode[ext]);
     if (shift != 0) {
-      AppendToOutput(" #%d", instr->SizeLS());
+      AppendToOutput(" #%" PRId64, instr->SizeLS());
     }
   }
   return 9;

docs/qapi-code-gen.txt

@@ -123,11 +123,12 @@ And it looks like this on the wire:
 
 Flat union types avoid the nesting on the wire. They are used whenever a
 specific field of the base type is declared as the discriminator ('type' is
-then no longer generated). The discriminator must always be a string field.
+then no longer generated). The discriminator must be of enumeration type.
 The above example can then be modified as follows:
 
+ { 'enum': 'BlockdevDriver', 'data': [ 'raw', 'qcow2' ] }
  { 'type': 'BlockdevCommonOptions',
-   'data': { 'driver': 'str', 'readonly': 'bool' } }
+   'data': { 'driver': 'BlockdevDriver', 'readonly': 'bool' } }
  { 'union': 'BlockdevOptions',
    'base': 'BlockdevCommonOptions',
    'discriminator': 'driver',

docs/qemupciserial.inf

@@ -11,99 +11,92 @@
 ; (Com+Lpt)" from the list.  Click "Have a disk".  Select this file.
 ; Procedure may vary a bit depending on the windows version.
 
-; FIXME: This file covers the single port version only.
+; This file covers all options: pci-serial, pci-serial-2x, pci-serial-4x
+; for both 32 and 64 bit platforms.
 
 [Version]
-Signature="$CHICAGO$"
-Class=Ports
-ClassGuid={4D36E978-E325-11CE-BFC1-08002BE10318}
+Signature="$Windows NT$"
+Class=MultiFunction
+ClassGUID={4d36e971-e325-11ce-bfc1-08002be10318}
 Provider=%QEMU%
-DriverVer=09/24/2012,1.3.0
-
-[SourceDisksNames]
-3426=windows cd
-
-[SourceDisksFiles]
-serial.sys 		= 3426
-serenum.sys 		= 3426
-
-[DestinationDirs]
-DefaultDestDir  = 11        ;LDID_SYS
-ComPort.NT.Copy = 12        ;DIRID_DRIVERS
-SerialEnumerator.NT.Copy=12 ;DIRID_DRIVERS
-
-; Drivers
-;----------------------------------------------------------
+DriverVer=12/29/2013,1.3.0
+[ControlFlags]
+ExcludeFromSelect=*
 [Manufacturer]
-%QEMU%=QEMU,NTx86
+%QEMU%=QEMU,NTx86,NTAMD64
 
 [QEMU.NTx86]
-%QEMU-PCI_SERIAL.DeviceDesc% = ComPort, "PCI\VEN_1b36&DEV_0002&CC_0700"
+%QEMU-PCI_SERIAL_1_PORT%=ComPort_inst1, PCI\VEN_1B36&DEV_0002
+%QEMU-PCI_SERIAL_2_PORT%=ComPort_inst2, PCI\VEN_1B36&DEV_0003
+%QEMU-PCI_SERIAL_4_PORT%=ComPort_inst4, PCI\VEN_1B36&DEV_0004
 
-; COM sections
-;----------------------------------------------------------
-[ComPort.AddReg]
-HKR,,PortSubClass,1,01
+[QEMU.NTAMD64]
+%QEMU-PCI_SERIAL_1_PORT%=ComPort_inst1, PCI\VEN_1B36&DEV_0002
+%QEMU-PCI_SERIAL_2_PORT%=ComPort_inst2, PCI\VEN_1B36&DEV_0003
+%QEMU-PCI_SERIAL_4_PORT%=ComPort_inst4, PCI\VEN_1B36&DEV_0004
 
-[ComPort.NT]
-AddReg=ComPort.AddReg, ComPort.NT.AddReg
-LogConfig=caa
-SyssetupPnPFlags = 1
+[ComPort_inst1]
+Include=mf.inf
+Needs=MFINSTALL.mf
 
-[ComPort.NT.HW]
-AddReg=ComPort.NT.HW.AddReg
+[ComPort_inst2]
+Include=mf.inf
+Needs=MFINSTALL.mf
 
-[ComPort.NT.AddReg]
-HKR,,EnumPropPages32,,"MsPorts.dll,SerialPortPropPageProvider"
+[ComPort_inst4]
+Include=mf.inf
+Needs=MFINSTALL.mf
 
-[ComPort.NT.HW.AddReg]
-HKR,,"UpperFilters",0x00010000,"serenum"
+[ComPort_inst1.HW]
+AddReg=ComPort_inst1.RegHW
 
-;-------------- Service installation
-; Port Driver (function driver for this device)
-[ComPort.NT.Services]
-AddService = Serial, 0x00000002, Serial_Service_Inst, Serial_EventLog_Inst
-AddService = Serenum,,Serenum_Service_Inst
+[ComPort_inst2.HW]
+AddReg=ComPort_inst2.RegHW
 
-; -------------- Serial Port Driver install sections
-[Serial_Service_Inst]
-DisplayName    = %Serial.SVCDESC%
-ServiceType    = 1               ; SERVICE_KERNEL_DRIVER
-StartType      = 1               ; SERVICE_SYSTEM_START (this driver may do detection)
-ErrorControl   = 0               ; SERVICE_ERROR_IGNORE
-ServiceBinary  = %12%\serial.sys
-LoadOrderGroup = Extended base
+[ComPort_inst4.HW]
+AddReg=ComPort_inst4.RegHW
 
-; -------------- Serenum Driver install section
-[Serenum_Service_Inst]
-DisplayName    = %Serenum.SVCDESC%
-ServiceType    = 1               ; SERVICE_KERNEL_DRIVER
-StartType      = 3               ; SERVICE_DEMAND_START
-ErrorControl   = 1               ; SERVICE_ERROR_NORMAL
-ServiceBinary  = %12%\serenum.sys
-LoadOrderGroup = PNP Filter
+[ComPort_inst1.Services]
+Include=mf.inf
+Needs=MFINSTALL.mf.Services
 
-[Serial_EventLog_Inst]
-AddReg = Serial_EventLog_AddReg
+[ComPort_inst2.Services]
+Include=mf.inf
+Needs=MFINSTALL.mf.Services
 
-[Serial_EventLog_AddReg]
-HKR,,EventMessageFile,0x00020000,"%%SystemRoot%%\System32\IoLogMsg.dll;%%SystemRoot%%\System32\drivers\serial.sys"
-HKR,,TypesSupported,0x00010001,7
+[ComPort_inst4.Services]
+Include=mf.inf
+Needs=MFINSTALL.mf.Services
 
-; The following sections are COM port resource configs.
-; Section name format means:
-; Char 1 = c (COM port)
-; Char 2 = I/O config: 1 (3f8), 2 (2f8), 3 (3e8), 4 (2e8), a (any)
-; Char 3 = IRQ config: #, a (any)
+[ComPort_inst1.RegHW]
+HKR,Child0000,HardwareID,,*PNP0501
+HKR,Child0000,VaryingResourceMap,1,00, 00,00,00,00, 08,00,00,00
+HKR,Child0000,ResourceMap,1,02
 
-[caa]                   ; Any base, any IRQ
-ConfigPriority=HARDRECONFIG
-IOConfig=8@100-ffff%fff8(3ff::)
-IRQConfig=S:3,4,5,7,9,10,11,12,14,15
+[ComPort_inst2.RegHW]
+HKR,Child0000,HardwareID,,*PNP0501
+HKR,Child0000,VaryingResourceMap,1,00, 00,00,00,00, 08,00,00,00
+HKR,Child0000,ResourceMap,1,02
+HKR,Child0001,HardwareID,,*PNP0501
+HKR,Child0001,VaryingResourceMap,1,00, 08,00,00,00, 08,00,00,00
+HKR,Child0001,ResourceMap,1,02
+
+[ComPort_inst4.RegHW]
+HKR,Child0000,HardwareID,,*PNP0501
+HKR,Child0000,VaryingResourceMap,1,00, 00,00,00,00, 08,00,00,00
+HKR,Child0000,ResourceMap,1,02
+HKR,Child0001,HardwareID,,*PNP0501
+HKR,Child0001,VaryingResourceMap,1,00, 08,00,00,00, 08,00,00,00
+HKR,Child0001,ResourceMap,1,02
+HKR,Child0002,HardwareID,,*PNP0501
+HKR,Child0002,VaryingResourceMap,1,00, 10,00,00,00, 08,00,00,00
+HKR,Child0002,ResourceMap,1,02
+HKR,Child0003,HardwareID,,*PNP0501
+HKR,Child0003,VaryingResourceMap,1,00, 18,00,00,00, 08,00,00,00
+HKR,Child0003,ResourceMap,1,02
 
 [Strings]
 QEMU="QEMU"
-QEMU-PCI_SERIAL.DeviceDesc="QEMU Serial PCI Card"
-
-Serial.SVCDESC   = "Serial port driver"
-Serenum.SVCDESC = "Serenum Filter Driver"
+QEMU-PCI_SERIAL_1_PORT="1x QEMU PCI Serial Card"
+QEMU-PCI_SERIAL_2_PORT="2x QEMU PCI Serial Card"
+QEMU-PCI_SERIAL_4_PORT="4x QEMU PCI Serial Card"

exec.c

@@ -33,6 +33,7 @@
 #include "hw/xen/xen.h"
 #include "qemu/timer.h"
 #include "qemu/config-file.h"
+#include "qemu/error-report.h"
 #include "exec/memory.h"
 #include "sysemu/dma.h"
 #include "exec/address-spaces.h"
@@ -419,7 +420,7 @@ static int cpu_common_post_load(void *opaque, int version_id)
     /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the
        version_id is increased. */
     cpu->interrupt_request &= ~0x01;
-    tlb_flush(cpu->env_ptr, 1);
+    tlb_flush(cpu, 1);
 
     return 0;
 }
@@ -484,8 +485,8 @@ void cpu_exec_init(CPUArchState *env)
     }
     cpu->cpu_index = cpu_index;
     cpu->numa_node = 0;
-    QTAILQ_INIT(&env->breakpoints);
-    QTAILQ_INIT(&env->watchpoints);
+    QTAILQ_INIT(&cpu->breakpoints);
+    QTAILQ_INIT(&cpu->watchpoints);
 #ifndef CONFIG_USER_ONLY
     cpu->as = &address_space_memory;
     cpu->thread_id = qemu_get_thread_id();
@@ -527,29 +528,29 @@ static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
 #endif /* TARGET_HAS_ICE */
 
 #if defined(CONFIG_USER_ONLY)
-void cpu_watchpoint_remove_all(CPUArchState *env, int mask)
+void cpu_watchpoint_remove_all(CPUState *cpu, int mask)
 
 {
 }
 
-int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len,
+int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
                           int flags, CPUWatchpoint **watchpoint)
 {
     return -ENOSYS;
 }
 #else
 /* Add a watchpoint.  */
-int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len,
+int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
                           int flags, CPUWatchpoint **watchpoint)
 {
-    target_ulong len_mask = ~(len - 1);
+    vaddr len_mask = ~(len - 1);
     CPUWatchpoint *wp;
 
     /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */
     if ((len & (len - 1)) || (addr & ~len_mask) ||
             len == 0 || len > TARGET_PAGE_SIZE) {
-        fprintf(stderr, "qemu: tried to set invalid watchpoint at "
-                TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len);
+        error_report("tried to set invalid watchpoint at %"
+                     VADDR_PRIx ", len=%" VADDR_PRIu, addr, len);
         return -EINVAL;
     }
     wp = g_malloc(sizeof(*wp));
@@ -559,12 +560,13 @@ int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len
     wp->flags = flags;
 
     /* keep all GDB-injected watchpoints in front */
-    if (flags & BP_GDB)
-        QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry);
-    else
-        QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry);
+    if (flags & BP_GDB) {
+        QTAILQ_INSERT_HEAD(&cpu->watchpoints, wp, entry);
+    } else {
+        QTAILQ_INSERT_TAIL(&cpu->watchpoints, wp, entry);
+    }
 
-    tlb_flush_page(env, addr);
+    tlb_flush_page(cpu, addr);
 
     if (watchpoint)
         *watchpoint = wp;
@@ -572,16 +574,16 @@ int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len
 }
 
 /* Remove a specific watchpoint.  */
-int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len,
+int cpu_watchpoint_remove(CPUState *cpu, vaddr addr, vaddr len,
                           int flags)
 {
-    target_ulong len_mask = ~(len - 1);
+    vaddr len_mask = ~(len - 1);
     CPUWatchpoint *wp;
 
-    QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
+    QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
         if (addr == wp->vaddr && len_mask == wp->len_mask
                 && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) {
-            cpu_watchpoint_remove_by_ref(env, wp);
+            cpu_watchpoint_remove_by_ref(cpu, wp);
             return 0;
         }
     }
@@ -589,29 +591,30 @@ int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len
 }
 
 /* Remove a specific watchpoint by reference.  */
-void cpu_watchpoint_remove_by_ref(CPUArchState *env, CPUWatchpoint *watchpoint)
+void cpu_watchpoint_remove_by_ref(CPUState *cpu, CPUWatchpoint *watchpoint)
 {
-    QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry);
+    QTAILQ_REMOVE(&cpu->watchpoints, watchpoint, entry);
 
-    tlb_flush_page(env, watchpoint->vaddr);
+    tlb_flush_page(cpu, watchpoint->vaddr);
 
     g_free(watchpoint);
 }
 
 /* Remove all matching watchpoints.  */
-void cpu_watchpoint_remove_all(CPUArchState *env, int mask)
+void cpu_watchpoint_remove_all(CPUState *cpu, int mask)
 {
     CPUWatchpoint *wp, *next;
 
-    QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) {
-        if (wp->flags & mask)
-            cpu_watchpoint_remove_by_ref(env, wp);
+    QTAILQ_FOREACH_SAFE(wp, &cpu->watchpoints, entry, next) {
+        if (wp->flags & mask) {
+            cpu_watchpoint_remove_by_ref(cpu, wp);
+        }
     }
 }
 #endif
 
 /* Add a breakpoint.  */
-int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags,
+int cpu_breakpoint_insert(CPUState *cpu, vaddr pc, int flags,
                           CPUBreakpoint **breakpoint)
 {
 #if defined(TARGET_HAS_ICE)
@@ -624,12 +627,12 @@ int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags,
 
     /* keep all GDB-injected breakpoints in front */
     if (flags & BP_GDB) {
-        QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry);
+        QTAILQ_INSERT_HEAD(&cpu->breakpoints, bp, entry);
     } else {
-        QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry);
+        QTAILQ_INSERT_TAIL(&cpu->breakpoints, bp, entry);
     }
 
-    breakpoint_invalidate(ENV_GET_CPU(env), pc);
+    breakpoint_invalidate(cpu, pc);
 
     if (breakpoint) {
         *breakpoint = bp;
@@ -641,14 +644,14 @@ int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags,
 }
 
 /* Remove a specific breakpoint.  */
-int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags)
+int cpu_breakpoint_remove(CPUState *cpu, vaddr pc, int flags)
 {
 #if defined(TARGET_HAS_ICE)
     CPUBreakpoint *bp;
 
-    QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
+    QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
         if (bp->pc == pc && bp->flags == flags) {
-            cpu_breakpoint_remove_by_ref(env, bp);
+            cpu_breakpoint_remove_by_ref(cpu, bp);
             return 0;
         }
     }
@@ -659,26 +662,27 @@ int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags)
 }
 
 /* Remove a specific breakpoint by reference.  */
-void cpu_breakpoint_remove_by_ref(CPUArchState *env, CPUBreakpoint *breakpoint)
+void cpu_breakpoint_remove_by_ref(CPUState *cpu, CPUBreakpoint *breakpoint)
 {
 #if defined(TARGET_HAS_ICE)
-    QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry);
+    QTAILQ_REMOVE(&cpu->breakpoints, breakpoint, entry);
 
-    breakpoint_invalidate(ENV_GET_CPU(env), breakpoint->pc);
+    breakpoint_invalidate(cpu, breakpoint->pc);
 
     g_free(breakpoint);
 #endif
 }
 
 /* Remove all matching breakpoints. */
-void cpu_breakpoint_remove_all(CPUArchState *env, int mask)
+void cpu_breakpoint_remove_all(CPUState *cpu, int mask)
 {
 #if defined(TARGET_HAS_ICE)
     CPUBreakpoint *bp, *next;
 
-    QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) {
-        if (bp->flags & mask)
-            cpu_breakpoint_remove_by_ref(env, bp);
+    QTAILQ_FOREACH_SAFE(bp, &cpu->breakpoints, entry, next) {
+        if (bp->flags & mask) {
+            cpu_breakpoint_remove_by_ref(cpu, bp);
+        }
     }
 #endif
 }
@@ -702,9 +706,8 @@ void cpu_single_step(CPUState *cpu, int enabled)
 #endif
 }
 
-void cpu_abort(CPUArchState *env, const char *fmt, ...)
+void cpu_abort(CPUState *cpu, const char *fmt, ...)
 {
-    CPUState *cpu = ENV_GET_CPU(env);
     va_list ap;
     va_list ap2;
 
@@ -792,7 +795,7 @@ static void cpu_physical_memory_set_dirty_tracking(bool enable)
     in_migration = enable;
 }
 
-hwaddr memory_region_section_get_iotlb(CPUArchState *env,
+hwaddr memory_region_section_get_iotlb(CPUState *cpu,
                                        MemoryRegionSection *section,
                                        target_ulong vaddr,
                                        hwaddr paddr, hwaddr xlat,
@@ -818,7 +821,7 @@ hwaddr memory_region_section_get_iotlb(CPUArchState *env,
 
     /* Make accesses to pages with watchpoints go via the
        watchpoint trap routines.  */
-    QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
+    QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
         if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) {
             /* Avoid trapping reads of pages with a write breakpoint. */
             if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) {
@@ -1029,7 +1032,7 @@ static void *file_ram_alloc(RAMBlock *block,
 
     hpagesize = gethugepagesize(path);
     if (!hpagesize) {
-        return NULL;
+        goto error;
     }
 
     if (memory < hpagesize) {
@@ -1038,7 +1041,7 @@ static void *file_ram_alloc(RAMBlock *block,
 
     if (kvm_enabled() && !kvm_has_sync_mmu()) {
         fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n");
-        return NULL;
+        goto error;
     }
 
     /* Make name safe to use with mkstemp by replacing '/' with '_'. */
@@ -1056,7 +1059,7 @@ static void *file_ram_alloc(RAMBlock *block,
     if (fd < 0) {
         perror("unable to create backing store for hugepages");
         g_free(filename);
-        return NULL;
+        goto error;
     }
     unlink(filename);
     g_free(filename);
@@ -1076,7 +1079,7 @@ static void *file_ram_alloc(RAMBlock *block,
     if (area == MAP_FAILED) {
         perror("file_ram_alloc: can't mmap RAM pages");
         close(fd);
-        return (NULL);
+        goto error;
     }
 
     if (mem_prealloc) {
@@ -1120,6 +1123,12 @@ static void *file_ram_alloc(RAMBlock *block,
 
     block->fd = fd;
     return area;
+
+error:
+    if (mem_prealloc) {
+        exit(1);
+    }
+    return NULL;
 }
 #else
 static void *file_ram_alloc(RAMBlock *block,
@@ -1547,7 +1556,7 @@ static void notdirty_mem_write(void *opaque, hwaddr ram_addr,
        flushed */
     if (!cpu_physical_memory_is_clean(ram_addr)) {
         CPUArchState *env = current_cpu->env_ptr;
-        tlb_set_dirty(env, env->mem_io_vaddr);
+        tlb_set_dirty(env, current_cpu->mem_io_vaddr);
     }
 }
 
@@ -1566,34 +1575,35 @@ static const MemoryRegionOps notdirty_mem_ops = {
 /* Generate a debug exception if a watchpoint has been hit.  */
 static void check_watchpoint(int offset, int len_mask, int flags)
 {
-    CPUArchState *env = current_cpu->env_ptr;
+    CPUState *cpu = current_cpu;
+    CPUArchState *env = cpu->env_ptr;
     target_ulong pc, cs_base;
     target_ulong vaddr;
     CPUWatchpoint *wp;
     int cpu_flags;
 
-    if (env->watchpoint_hit) {
+    if (cpu->watchpoint_hit) {
         /* We re-entered the check after replacing the TB. Now raise
          * the debug interrupt so that is will trigger after the
          * current instruction. */
-        cpu_interrupt(ENV_GET_CPU(env), CPU_INTERRUPT_DEBUG);
+        cpu_interrupt(cpu, CPU_INTERRUPT_DEBUG);
         return;
     }
-    vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset;
-    QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
+    vaddr = (cpu->mem_io_vaddr & TARGET_PAGE_MASK) + offset;
+    QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
         if ((vaddr == (wp->vaddr & len_mask) ||
              (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) {
             wp->flags |= BP_WATCHPOINT_HIT;
-            if (!env->watchpoint_hit) {
-                env->watchpoint_hit = wp;
-                tb_check_watchpoint(env);
+            if (!cpu->watchpoint_hit) {
+                cpu->watchpoint_hit = wp;
+                tb_check_watchpoint(cpu);
                 if (wp->flags & BP_STOP_BEFORE_ACCESS) {
-                    env->exception_index = EXCP_DEBUG;
-                    cpu_loop_exit(env);
+                    cpu->exception_index = EXCP_DEBUG;
+                    cpu_loop_exit(cpu);
                 } else {
                     cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags);
-                    tb_gen_code(env, pc, cs_base, cpu_flags, 1);
-                    cpu_resume_from_signal(env, NULL);
+                    tb_gen_code(cpu, pc, cs_base, cpu_flags, 1);
+                    cpu_resume_from_signal(cpu, NULL);
                 }
             }
         } else {
@@ -1824,14 +1834,12 @@ static void tcg_commit(MemoryListener *listener)
        reset the modified entries */
     /* XXX: slow ! */
     CPU_FOREACH(cpu) {
-        CPUArchState *env = cpu->env_ptr;
-
         /* FIXME: Disentangle the cpu.h circular files deps so we can
            directly get the right CPU from listener.  */
         if (cpu->tcg_as_listener != listener) {
             continue;
         }
-        tlb_flush(env, 1);
+        tlb_flush(cpu, 1);
     }
 }
 

fpu/softfloat.c

@@ -288,7 +288,7 @@ INLINE flag extractFloat32Sign( float32 a )
 | If `a' is denormal and we are in flush-to-zero mode then set the
 | input-denormal exception and return zero. Otherwise just return the value.
 *----------------------------------------------------------------------------*/
-static float32 float32_squash_input_denormal(float32 a STATUS_PARAM)
+float32 float32_squash_input_denormal(float32 a STATUS_PARAM)
 {
     if (STATUS(flush_inputs_to_zero)) {
         if (extractFloat32Exp(a) == 0 && extractFloat32Frac(a) != 0) {
@@ -473,7 +473,7 @@ INLINE flag extractFloat64Sign( float64 a )
 | If `a' is denormal and we are in flush-to-zero mode then set the
 | input-denormal exception and return zero. Otherwise just return the value.
 *----------------------------------------------------------------------------*/
-static float64 float64_squash_input_denormal(float64 a STATUS_PARAM)
+float64 float64_squash_input_denormal(float64 a STATUS_PARAM)
 {
     if (STATUS(flush_inputs_to_zero)) {
         if (extractFloat64Exp(a) == 0 && extractFloat64Frac(a) != 0) {

fsdev/Makefile.objs

@@ -1,4 +1,6 @@
-ifeq ($(CONFIG_REALLY_VIRTFS),y)
+ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy)
+# Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
+# only pull in the actual virtio-9p device if we also enabled virtio.
 common-obj-y = qemu-fsdev.o virtio-9p-marshal.o
 else
 common-obj-y = qemu-fsdev-dummy.o

fsdev/virtfs-proxy-helper.c

@@ -595,7 +595,7 @@ static int do_readlink(struct iovec *iovec, struct iovec *out_iovec)
     }
     buffer = g_malloc(size);
     v9fs_string_init(&target);
-    retval = readlink(path.data, buffer, size);
+    retval = readlink(path.data, buffer, size - 1);
     if (retval > 0) {
         buffer[retval] = '\0';
         v9fs_string_sprintf(&target, "%s", buffer);

gdbstub.c

@@ -635,7 +635,6 @@ static const int xlat_gdb_type[] = {
 static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type)
 {
     CPUState *cpu;
-    CPUArchState *env;
     int err = 0;
 
     if (kvm_enabled()) {
@@ -646,10 +645,10 @@ static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type)
     case GDB_BREAKPOINT_SW:
     case GDB_BREAKPOINT_HW:
         CPU_FOREACH(cpu) {
-            env = cpu->env_ptr;
-            err = cpu_breakpoint_insert(env, addr, BP_GDB, NULL);
-            if (err)
+            err = cpu_breakpoint_insert(cpu, addr, BP_GDB, NULL);
+            if (err) {
                 break;
+            }
         }
         return err;
 #ifndef CONFIG_USER_ONLY
@@ -657,8 +656,7 @@ static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type)
     case GDB_WATCHPOINT_READ:
     case GDB_WATCHPOINT_ACCESS:
         CPU_FOREACH(cpu) {
-            env = cpu->env_ptr;
-            err = cpu_watchpoint_insert(env, addr, len, xlat_gdb_type[type],
+            err = cpu_watchpoint_insert(cpu, addr, len, xlat_gdb_type[type],
                                         NULL);
             if (err)
                 break;
@@ -673,7 +671,6 @@ static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type)
 static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type)
 {
     CPUState *cpu;
-    CPUArchState *env;
     int err = 0;
 
     if (kvm_enabled()) {
@@ -684,10 +681,10 @@ static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type)
     case GDB_BREAKPOINT_SW:
     case GDB_BREAKPOINT_HW:
         CPU_FOREACH(cpu) {
-            env = cpu->env_ptr;
-            err = cpu_breakpoint_remove(env, addr, BP_GDB);
-            if (err)
+            err = cpu_breakpoint_remove(cpu, addr, BP_GDB);
+            if (err) {
                 break;
+            }
         }
         return err;
 #ifndef CONFIG_USER_ONLY
@@ -695,8 +692,7 @@ static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type)
     case GDB_WATCHPOINT_READ:
     case GDB_WATCHPOINT_ACCESS:
         CPU_FOREACH(cpu) {
-            env = cpu->env_ptr;
-            err = cpu_watchpoint_remove(env, addr, len, xlat_gdb_type[type]);
+            err = cpu_watchpoint_remove(cpu, addr, len, xlat_gdb_type[type]);
             if (err)
                 break;
         }
@@ -710,7 +706,6 @@ static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type)
 static void gdb_breakpoint_remove_all(void)
 {
     CPUState *cpu;
-    CPUArchState *env;
 
     if (kvm_enabled()) {
         kvm_remove_all_breakpoints(gdbserver_state->c_cpu);
@@ -718,10 +713,9 @@ static void gdb_breakpoint_remove_all(void)
     }
 
     CPU_FOREACH(cpu) {
-        env = cpu->env_ptr;
-        cpu_breakpoint_remove_all(env, BP_GDB);
+        cpu_breakpoint_remove_all(cpu, BP_GDB);
 #ifndef CONFIG_USER_ONLY
-        cpu_watchpoint_remove_all(env, BP_GDB);
+        cpu_watchpoint_remove_all(cpu, BP_GDB);
 #endif
     }
 }
@@ -1086,8 +1080,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
         }
 #ifdef CONFIG_USER_ONLY
         else if (strncmp(p, "Offsets", 7) == 0) {
-            CPUArchState *env = s->c_cpu->env_ptr;
-            TaskState *ts = env->opaque;
+            TaskState *ts = s->c_cpu->opaque;
 
             snprintf(buf, sizeof(buf),
                      "Text=" TARGET_ABI_FMT_lx ";Data=" TARGET_ABI_FMT_lx
@@ -1205,8 +1198,8 @@ static void gdb_vm_state_change(void *opaque, int running, RunState state)
     }
     switch (state) {
     case RUN_STATE_DEBUG:
-        if (env->watchpoint_hit) {
-            switch (env->watchpoint_hit->flags & BP_MEM_ACCESS) {
+        if (cpu->watchpoint_hit) {
+            switch (cpu->watchpoint_hit->flags & BP_MEM_ACCESS) {
             case BP_MEM_READ:
                 type = "r";
                 break;
@@ -1220,8 +1213,8 @@ static void gdb_vm_state_change(void *opaque, int running, RunState state)
             snprintf(buf, sizeof(buf),
                      "T%02xthread:%02x;%swatch:" TARGET_FMT_lx ";",
                      GDB_SIGNAL_TRAP, cpu_index(cpu), type,
-                     env->watchpoint_hit->vaddr);
-            env->watchpoint_hit = NULL;
+                     (target_ulong)cpu->watchpoint_hit->vaddr);
+            cpu->watchpoint_hit = NULL;
             goto send_packet;
         }
         tb_flush(env);
@@ -1594,13 +1587,16 @@ int gdbserver_start(int port)
 /* Disable gdb stub for child processes.  */
 void gdbserver_fork(CPUArchState *env)
 {
+    CPUState *cpu = ENV_GET_CPU(env);
     GDBState *s = gdbserver_state;
-    if (gdbserver_fd < 0 || s->fd < 0)
-      return;
+
+    if (gdbserver_fd < 0 || s->fd < 0) {
+        return;
+    }
     close(s->fd);
     s->fd = -1;
-    cpu_breakpoint_remove_all(env, BP_GDB);
-    cpu_watchpoint_remove_all(env, BP_GDB);
+    cpu_breakpoint_remove_all(cpu, BP_GDB);
+    cpu_watchpoint_remove_all(cpu, BP_GDB);
 }
 #else
 static int gdb_chr_can_receive(void *opaque)

hw/9pfs/cofs.c

@@ -17,35 +17,55 @@
 #include "block/coroutine.h"
 #include "virtio-9p-coth.h"
 
+static ssize_t __readlink(V9fsState *s, V9fsPath *path, V9fsString *buf)
+{
+    ssize_t len, maxlen = PATH_MAX;
+
+    buf->data = g_malloc(PATH_MAX);
+    for(;;) {
+        len = s->ops->readlink(&s->ctx, path, buf->data, maxlen);
+        if (len < 0) {
+            g_free(buf->data);
+            buf->data = NULL;
+            buf->size = 0;
+            break;
+        } else if (len == maxlen) {
+            /*
+             * We dodn't have space to put the NULL or we have more
+             * to read. Increase the size and try again
+             */
+            maxlen *= 2;
+            g_free(buf->data);
+            buf->data = g_malloc(maxlen);
+            continue;
+        }
+        /*
+         * Null terminate the readlink output
+         */
+        buf->data[len] = '\0';
+        buf->size = len;
+        break;
+    }
+    return len;
+}
+
 int v9fs_co_readlink(V9fsPDU *pdu, V9fsPath *path, V9fsString *buf)
 {
     int err;
-    ssize_t len;
     V9fsState *s = pdu->s;
 
     if (v9fs_request_cancelled(pdu)) {
         return -EINTR;
     }
-    buf->data = g_malloc(PATH_MAX);
     v9fs_path_read_lock(s);
     v9fs_co_run_in_worker(
         {
-            len = s->ops->readlink(&s->ctx, path,
-                                   buf->data, PATH_MAX - 1);
-            if (len > -1) {
-                buf->size = len;
-                buf->data[len] = 0;
-                err = 0;
-            } else {
+            err = __readlink(s, path, buf);
+            if (err < 0) {
                 err = -errno;
             }
         });
     v9fs_path_unlock(s);
-    if (err) {
-        g_free(buf->data);
-        buf->data = NULL;
-        buf->size = 0;
-    }
     return err;
 }
 

hw/9pfs/virtio-9p-handle.c

@@ -498,7 +498,7 @@ static int handle_lremovexattr(FsContext *ctx, V9fsPath *fs_path,
 static int handle_name_to_path(FsContext *ctx, V9fsPath *dir_path,
                               const char *name, V9fsPath *target)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
     struct file_handle *fh;
     int dirfd, ret, mnt_id;
     struct handle_data *data = (struct handle_data *)ctx->private;
@@ -513,7 +513,9 @@ static int handle_name_to_path(FsContext *ctx, V9fsPath *dir_path,
         dirfd = open_by_handle(data->mountfd, dir_path->data, O_PATH);
     } else {
         /* relative to export root */
-        dirfd = open(rpath(ctx, ".", buffer), O_DIRECTORY);
+        buffer = rpath(ctx, ".");
+        dirfd = open(buffer, O_DIRECTORY);
+        g_free(buffer);
     }
     if (dirfd < 0) {
         return dirfd;
@@ -521,7 +523,7 @@ static int handle_name_to_path(FsContext *ctx, V9fsPath *dir_path,
     fh = g_malloc(sizeof(struct file_handle) + data->handle_bytes);
     fh->handle_bytes = data->handle_bytes;
     /* add a "./" at the beginning of the path */
-    snprintf(buffer, PATH_MAX, "./%s", name);
+    buffer = g_strdup_printf("./%s", name);
     /* flag = 0 imply don't follow symlink */
     ret = name_to_handle(dirfd, buffer, fh, &mnt_id, 0);
     if (!ret) {
@@ -531,6 +533,7 @@ static int handle_name_to_path(FsContext *ctx, V9fsPath *dir_path,
         g_free(fh);
     }
     close(dirfd);
+    g_free(buffer);
     return ret;
 }
 

hw/9pfs/virtio-9p-local.c

@@ -42,18 +42,18 @@
 
 #define VIRTFS_META_DIR ".virtfs_metadata"
 
-static const char *local_mapped_attr_path(FsContext *ctx,
-                                          const char *path, char *buffer)
+static char *local_mapped_attr_path(FsContext *ctx, const char *path)
 {
     char *dir_name;
     char *tmp_path = g_strdup(path);
     char *base_name = basename(tmp_path);
+    char *buffer;
 
     /* NULL terminate the directory */
     dir_name = tmp_path;
     *(base_name - 1) = '\0';
 
-    snprintf(buffer, PATH_MAX, "%s/%s/%s/%s",
+    buffer = g_strdup_printf("%s/%s/%s/%s",
              ctx->fs_root, dir_name, VIRTFS_META_DIR, base_name);
     g_free(tmp_path);
     return buffer;
@@ -92,10 +92,11 @@ static void local_mapped_file_attr(FsContext *ctx, const char *path,
 {
     FILE *fp;
     char buf[ATTR_MAX];
-    char attr_path[PATH_MAX];
+    char *attr_path;
 
-    local_mapped_attr_path(ctx, path, attr_path);
+    attr_path = local_mapped_attr_path(ctx, path);
     fp = local_fopen(attr_path, "r");
+    g_free(attr_path);
     if (!fp) {
         return;
     }
@@ -118,12 +119,13 @@ static void local_mapped_file_attr(FsContext *ctx, const char *path,
 static int local_lstat(FsContext *fs_ctx, V9fsPath *fs_path, struct stat *stbuf)
 {
     int err;
-    char buffer[PATH_MAX];
+    char *buffer;
     char *path = fs_path->data;
 
-    err =  lstat(rpath(fs_ctx, path, buffer), stbuf);
+    buffer = rpath(fs_ctx, path);
+    err =  lstat(buffer, stbuf);
     if (err) {
-        return err;
+        goto err_out;
     }
     if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
         /* Actual credentials are part of extended attrs */
@@ -131,41 +133,42 @@ static int local_lstat(FsContext *fs_ctx, V9fsPath *fs_path, struct stat *stbuf)
         gid_t tmp_gid;
         mode_t tmp_mode;
         dev_t tmp_dev;
-        if (getxattr(rpath(fs_ctx, path, buffer), "user.virtfs.uid", &tmp_uid,
-                    sizeof(uid_t)) > 0) {
+        if (getxattr(buffer, "user.virtfs.uid", &tmp_uid, sizeof(uid_t)) > 0) {
             stbuf->st_uid = tmp_uid;
         }
-        if (getxattr(rpath(fs_ctx, path, buffer), "user.virtfs.gid", &tmp_gid,
-                    sizeof(gid_t)) > 0) {
+        if (getxattr(buffer, "user.virtfs.gid", &tmp_gid, sizeof(gid_t)) > 0) {
             stbuf->st_gid = tmp_gid;
         }
-        if (getxattr(rpath(fs_ctx, path, buffer), "user.virtfs.mode",
+        if (getxattr(buffer, "user.virtfs.mode",
                     &tmp_mode, sizeof(mode_t)) > 0) {
             stbuf->st_mode = tmp_mode;
         }
-        if (getxattr(rpath(fs_ctx, path, buffer), "user.virtfs.rdev", &tmp_dev,
-                        sizeof(dev_t)) > 0) {
+        if (getxattr(buffer, "user.virtfs.rdev", &tmp_dev, sizeof(dev_t)) > 0) {
                 stbuf->st_rdev = tmp_dev;
         }
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         local_mapped_file_attr(fs_ctx, path, stbuf);
     }
+
+err_out:
+    g_free(buffer);
     return err;
 }
 
 static int local_create_mapped_attr_dir(FsContext *ctx, const char *path)
 {
     int err;
-    char attr_dir[PATH_MAX];
+    char *attr_dir;
     char *tmp_path = g_strdup(path);
 
-    snprintf(attr_dir, PATH_MAX, "%s/%s/%s",
+    attr_dir = g_strdup_printf("%s/%s/%s",
              ctx->fs_root, dirname(tmp_path), VIRTFS_META_DIR);
 
     err = mkdir(attr_dir, 0700);
     if (err < 0 && errno == EEXIST) {
         err = 0;
     }
+    g_free(attr_dir);
     g_free(tmp_path);
     return err;
 }
@@ -176,10 +179,11 @@ static int local_set_mapped_file_attr(FsContext *ctx,
     FILE *fp;
     int ret = 0;
     char buf[ATTR_MAX];
-    char attr_path[PATH_MAX];
+    char *attr_path;
     int uid = -1, gid = -1, mode = -1, rdev = -1;
 
-    fp = local_fopen(local_mapped_attr_path(ctx, path, attr_path), "r");
+    attr_path = local_mapped_attr_path(ctx, path);
+    fp = local_fopen(attr_path, "r");
     if (!fp) {
         goto create_map_file;
     }
@@ -241,6 +245,7 @@ update_map_file:
     fclose(fp);
 
 err_out:
+    g_free(attr_path);
     return ret;
 }
 
@@ -282,36 +287,43 @@ static int local_set_xattr(const char *path, FsCred *credp)
 static int local_post_create_passthrough(FsContext *fs_ctx, const char *path,
                                          FsCred *credp)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
 
-    if (lchown(rpath(fs_ctx, path, buffer), credp->fc_uid,
-                credp->fc_gid) < 0) {
+    buffer = rpath(fs_ctx, path);
+    if (lchown(buffer, credp->fc_uid, credp->fc_gid) < 0) {
         /*
          * If we fail to change ownership and if we are
          * using security model none. Ignore the error
          */
         if ((fs_ctx->export_flags & V9FS_SEC_MASK) != V9FS_SM_NONE) {
-            return -1;
+            goto err;
         }
     }
 
-    if (chmod(rpath(fs_ctx, path, buffer), credp->fc_mode & 07777) < 0) {
-        return -1;
+    if (chmod(buffer, credp->fc_mode & 07777) < 0) {
+        goto err;
     }
+
+    g_free(buffer);
     return 0;
+err:
+    g_free(buffer);
+    return -1;
 }
 
 static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path,
                               char *buf, size_t bufsz)
 {
     ssize_t tsize = -1;
-    char buffer[PATH_MAX];
+    char *buffer;
     char *path = fs_path->data;
 
     if ((fs_ctx->export_flags & V9FS_SM_MAPPED) ||
         (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE)) {
         int fd;
-        fd = open(rpath(fs_ctx, path, buffer), O_RDONLY | O_NOFOLLOW);
+        buffer = rpath(fs_ctx, path);
+        fd = open(buffer, O_RDONLY | O_NOFOLLOW);
+        g_free(buffer);
         if (fd == -1) {
             return -1;
         }
@@ -322,7 +334,9 @@ static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path,
         return tsize;
     } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
                (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        tsize = readlink(rpath(fs_ctx, path, buffer), buf, bufsz);
+        buffer = rpath(fs_ctx, path);
+        tsize = readlink(buffer, buf, bufsz);
+        g_free(buffer);
     }
     return tsize;
 }
@@ -340,20 +354,24 @@ static int local_closedir(FsContext *ctx, V9fsFidOpenState *fs)
 static int local_open(FsContext *ctx, V9fsPath *fs_path,
                       int flags, V9fsFidOpenState *fs)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
     char *path = fs_path->data;
 
-    fs->fd = open(rpath(ctx, path, buffer), flags | O_NOFOLLOW);
+    buffer = rpath(ctx, path);
+    fs->fd = open(buffer, flags | O_NOFOLLOW);
+    g_free(buffer);
     return fs->fd;
 }
 
 static int local_opendir(FsContext *ctx,
                          V9fsPath *fs_path, V9fsFidOpenState *fs)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
     char *path = fs_path->data;
 
-    fs->dir = opendir(rpath(ctx, path, buffer));
+    buffer = rpath(ctx, path);
+    fs->dir = opendir(buffer);
+    g_free(buffer);
     if (!fs->dir) {
         return -1;
     }
@@ -441,18 +459,23 @@ static ssize_t local_pwritev(FsContext *ctx, V9fsFidOpenState *fs,
 
 static int local_chmod(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret = -1;
     char *path = fs_path->data;
 
     if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
-        return local_set_xattr(rpath(fs_ctx, path, buffer), credp);
+        buffer = rpath(fs_ctx, path);
+        ret = local_set_xattr(buffer, credp);
+        g_free(buffer);
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         return local_set_mapped_file_attr(fs_ctx, path, credp);
     } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
                (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        return chmod(rpath(fs_ctx, path, buffer), credp->fc_mode);
+        buffer = rpath(fs_ctx, path);
+        ret = chmod(buffer, credp->fc_mode);
+        g_free(buffer);
     }
-    return -1;
+    return ret;
 }
 
 static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
@@ -462,7 +485,7 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
     int err = -1;
     int serrno = 0;
     V9fsString fullname;
-    char buffer[PATH_MAX];
+    char *buffer;
 
     v9fs_string_init(&fullname);
     v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
@@ -470,21 +493,23 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
 
     /* Determine the security model */
     if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
-        err = mknod(rpath(fs_ctx, path, buffer),
-                SM_LOCAL_MODE_BITS|S_IFREG, 0);
+        buffer = rpath(fs_ctx, path);
+        err = mknod(buffer, SM_LOCAL_MODE_BITS|S_IFREG, 0);
         if (err == -1) {
+            g_free(buffer);
             goto out;
         }
-        err = local_set_xattr(rpath(fs_ctx, path, buffer), credp);
+        err = local_set_xattr(buffer, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
         }
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
 
-        err = mknod(rpath(fs_ctx, path, buffer),
-                    SM_LOCAL_MODE_BITS|S_IFREG, 0);
+        buffer = rpath(fs_ctx, path);
+        err = mknod(buffer, SM_LOCAL_MODE_BITS|S_IFREG, 0);
         if (err == -1) {
+            g_free(buffer);
             goto out;
         }
         err = local_set_mapped_file_attr(fs_ctx, path, credp);
@@ -494,9 +519,10 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
         }
     } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
                (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        err = mknod(rpath(fs_ctx, path, buffer), credp->fc_mode,
-                credp->fc_rdev);
+        buffer = rpath(fs_ctx, path);
+        err = mknod(buffer, credp->fc_mode, credp->fc_rdev);
         if (err == -1) {
+            g_free(buffer);
             goto out;
         }
         err = local_post_create_passthrough(fs_ctx, path, credp);
@@ -508,8 +534,9 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
     goto out;
 
 err_end:
-    remove(rpath(fs_ctx, path, buffer));
+    remove(buffer);
     errno = serrno;
+    g_free(buffer);
 out:
     v9fs_string_free(&fullname);
     return err;
@@ -522,7 +549,7 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
     int err = -1;
     int serrno = 0;
     V9fsString fullname;
-    char buffer[PATH_MAX];
+    char *buffer;
 
     v9fs_string_init(&fullname);
     v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
@@ -530,19 +557,23 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
 
     /* Determine the security model */
     if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
-        err = mkdir(rpath(fs_ctx, path, buffer), SM_LOCAL_DIR_MODE_BITS);
+        buffer = rpath(fs_ctx, path);
+        err = mkdir(buffer, SM_LOCAL_DIR_MODE_BITS);
         if (err == -1) {
+            g_free(buffer);
             goto out;
         }
         credp->fc_mode = credp->fc_mode|S_IFDIR;
-        err = local_set_xattr(rpath(fs_ctx, path, buffer), credp);
+        err = local_set_xattr(buffer, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
         }
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
-        err = mkdir(rpath(fs_ctx, path, buffer), SM_LOCAL_DIR_MODE_BITS);
+        buffer = rpath(fs_ctx, path);
+        err = mkdir(buffer, SM_LOCAL_DIR_MODE_BITS);
         if (err == -1) {
+            g_free(buffer);
             goto out;
         }
         credp->fc_mode = credp->fc_mode|S_IFDIR;
@@ -553,8 +584,10 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
         }
     } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
                (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        err = mkdir(rpath(fs_ctx, path, buffer), credp->fc_mode);
+        buffer = rpath(fs_ctx, path);
+        err = mkdir(buffer, credp->fc_mode);
         if (err == -1) {
+            g_free(buffer);
             goto out;
         }
         err = local_post_create_passthrough(fs_ctx, path, credp);
@@ -566,8 +599,9 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
     goto out;
 
 err_end:
-    remove(rpath(fs_ctx, path, buffer));
+    remove(buffer);
     errno = serrno;
+    g_free(buffer);
 out:
     v9fs_string_free(&fullname);
     return err;
@@ -626,7 +660,7 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
     int err = -1;
     int serrno = 0;
     V9fsString fullname;
-    char buffer[PATH_MAX];
+    char *buffer;
 
     /*
      * Mark all the open to not follow symlinks
@@ -639,21 +673,25 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
 
     /* Determine the security model */
     if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
-        fd = open(rpath(fs_ctx, path, buffer), flags, SM_LOCAL_MODE_BITS);
+        buffer = rpath(fs_ctx, path);
+        fd = open(buffer, flags, SM_LOCAL_MODE_BITS);
         if (fd == -1) {
+            g_free(buffer);
             err = fd;
             goto out;
         }
         credp->fc_mode = credp->fc_mode|S_IFREG;
         /* Set cleint credentials in xattr */
-        err = local_set_xattr(rpath(fs_ctx, path, buffer), credp);
+        err = local_set_xattr(buffer, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
         }
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
-        fd = open(rpath(fs_ctx, path, buffer), flags, SM_LOCAL_MODE_BITS);
+        buffer = rpath(fs_ctx, path);
+        fd = open(buffer, flags, SM_LOCAL_MODE_BITS);
         if (fd == -1) {
+            g_free(buffer);
             err = fd;
             goto out;
         }
@@ -666,8 +704,10 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
         }
     } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
                (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        fd = open(rpath(fs_ctx, path, buffer), flags, credp->fc_mode);
+        buffer = rpath(fs_ctx, path);
+        fd = open(buffer, flags, credp->fc_mode);
         if (fd == -1) {
+            g_free(buffer);
             err = fd;
             goto out;
         }
@@ -683,8 +723,9 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
 
 err_end:
     close(fd);
-    remove(rpath(fs_ctx, path, buffer));
+    remove(buffer);
     errno = serrno;
+    g_free(buffer);
 out:
     v9fs_string_free(&fullname);
     return err;
@@ -698,7 +739,7 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
     int serrno = 0;
     char *newpath;
     V9fsString fullname;
-    char buffer[PATH_MAX];
+    char *buffer;
 
     v9fs_string_init(&fullname);
     v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
@@ -708,10 +749,10 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
     if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
         int fd;
         ssize_t oldpath_size, write_size;
-        fd = open(rpath(fs_ctx, newpath, buffer),
-                  O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW,
-                  SM_LOCAL_MODE_BITS);
+        buffer = rpath(fs_ctx, newpath);
+        fd = open(buffer, O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW, SM_LOCAL_MODE_BITS);
         if (fd == -1) {
+            g_free(buffer);
             err = fd;
             goto out;
         }
@@ -730,7 +771,7 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
         close(fd);
         /* Set cleint credentials in symlink's xattr */
         credp->fc_mode = credp->fc_mode|S_IFLNK;
-        err = local_set_xattr(rpath(fs_ctx, newpath, buffer), credp);
+        err = local_set_xattr(buffer, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
@@ -738,10 +779,10 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         int fd;
         ssize_t oldpath_size, write_size;
-        fd = open(rpath(fs_ctx, newpath, buffer),
-                  O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW,
-                  SM_LOCAL_MODE_BITS);
+        buffer = rpath(fs_ctx, newpath);
+        fd = open(buffer, O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW, SM_LOCAL_MODE_BITS);
         if (fd == -1) {
+            g_free(buffer);
             err = fd;
             goto out;
         }
@@ -767,12 +808,13 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
         }
     } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
                (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        err = symlink(oldpath, rpath(fs_ctx, newpath, buffer));
+        buffer = rpath(fs_ctx, newpath);
+        err = symlink(oldpath, buffer);
         if (err) {
+            g_free(buffer);
             goto out;
         }
-        err = lchown(rpath(fs_ctx, newpath, buffer), credp->fc_uid,
-                     credp->fc_gid);
+        err = lchown(buffer, credp->fc_uid, credp->fc_gid);
         if (err == -1) {
             /*
              * If we fail to change ownership and if we are
@@ -788,8 +830,9 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
     goto out;
 
 err_end:
-    remove(rpath(fs_ctx, newpath, buffer));
+    remove(buffer);
     errno = serrno;
+    g_free(buffer);
 out:
     v9fs_string_free(&fullname);
     return err;
@@ -800,13 +843,16 @@ static int local_link(FsContext *ctx, V9fsPath *oldpath,
 {
     int ret;
     V9fsString newpath;
-    char buffer[PATH_MAX], buffer1[PATH_MAX];
+    char *buffer, *buffer1;
 
     v9fs_string_init(&newpath);
     v9fs_string_sprintf(&newpath, "%s/%s", dirpath->data, name);
 
-    ret = link(rpath(ctx, oldpath->data, buffer),
-               rpath(ctx, newpath.data, buffer1));
+    buffer = rpath(ctx, oldpath->data);
+    buffer1 = rpath(ctx, newpath.data);
+    ret = link(buffer, buffer1);
+    g_free(buffer);
+    g_free(buffer1);
 
     /* now link the virtfs_metadata files */
     if (!ret && (ctx->export_flags & V9FS_SM_MAPPED_FILE)) {
@@ -815,8 +861,11 @@ static int local_link(FsContext *ctx, V9fsPath *oldpath,
         if (ret < 0) {
             goto err_out;
         }
-        ret = link(local_mapped_attr_path(ctx, oldpath->data, buffer),
-                   local_mapped_attr_path(ctx, newpath.data, buffer1));
+        buffer = local_mapped_attr_path(ctx, oldpath->data);
+        buffer1 = local_mapped_attr_path(ctx, newpath.data);
+        ret = link(buffer, buffer1);
+        g_free(buffer);
+        g_free(buffer1);
         if (ret < 0 && errno != ENOENT) {
             goto err_out;
         }
@@ -828,17 +877,21 @@ err_out:
 
 static int local_truncate(FsContext *ctx, V9fsPath *fs_path, off_t size)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret;
     char *path = fs_path->data;
 
-    return truncate(rpath(ctx, path, buffer), size);
+    buffer = rpath(ctx, path);
+    ret = truncate(buffer, size);
+    g_free(buffer);
+    return ret;
 }
 
 static int local_rename(FsContext *ctx, const char *oldpath,
                         const char *newpath)
 {
     int err;
-    char buffer[PATH_MAX], buffer1[PATH_MAX];
+    char *buffer, *buffer1;
 
     if (ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         err = local_create_mapped_attr_dir(ctx, newpath);
@@ -846,50 +899,69 @@ static int local_rename(FsContext *ctx, const char *oldpath,
             return err;
         }
         /* rename the .virtfs_metadata files */
-        err = rename(local_mapped_attr_path(ctx, oldpath, buffer),
-                     local_mapped_attr_path(ctx, newpath, buffer1));
+        buffer = local_mapped_attr_path(ctx, oldpath);
+        buffer1 = local_mapped_attr_path(ctx, newpath);
+        err = rename(buffer, buffer1);
+        g_free(buffer);
+        g_free(buffer1);
         if (err < 0 && errno != ENOENT) {
             return err;
         }
     }
-    return rename(rpath(ctx, oldpath, buffer), rpath(ctx, newpath, buffer1));
+
+    buffer = rpath(ctx, oldpath);
+    buffer1 = rpath(ctx, newpath);
+    err = rename(buffer, buffer1);
+    g_free(buffer);
+    g_free(buffer1);
+    return err;
 }
 
 static int local_chown(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret = -1;
     char *path = fs_path->data;
 
     if ((credp->fc_uid == -1 && credp->fc_gid == -1) ||
         (fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
         (fs_ctx->export_flags & V9FS_SM_NONE)) {
-        return lchown(rpath(fs_ctx, path, buffer),
-                      credp->fc_uid, credp->fc_gid);
+        buffer = rpath(fs_ctx, path);
+        ret = lchown(buffer, credp->fc_uid, credp->fc_gid);
+        g_free(buffer);
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
-        return local_set_xattr(rpath(fs_ctx, path, buffer), credp);
+        buffer = rpath(fs_ctx, path);
+        ret = local_set_xattr(buffer, credp);
+        g_free(buffer);
     } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         return local_set_mapped_file_attr(fs_ctx, path, credp);
     }
-    return -1;
+    return ret;
 }
 
 static int local_utimensat(FsContext *s, V9fsPath *fs_path,
                            const struct timespec *buf)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret;
     char *path = fs_path->data;
 
-    return qemu_utimens(rpath(s, path, buffer), buf);
+    buffer = rpath(s, path);
+    ret = qemu_utimens(buffer, buf);
+    g_free(buffer);
+    return ret;
 }
 
 static int local_remove(FsContext *ctx, const char *path)
 {
     int err;
     struct stat stbuf;
-    char buffer[PATH_MAX];
+    char *buffer;
 
     if (ctx->export_flags & V9FS_SM_MAPPED_FILE) {
-        err =  lstat(rpath(ctx, path, buffer), &stbuf);
+        buffer = rpath(ctx, path);
+        err =  lstat(buffer, &stbuf);
+        g_free(buffer);
         if (err) {
             goto err_out;
         }
@@ -898,8 +970,10 @@ static int local_remove(FsContext *ctx, const char *path)
          * directory
          */
         if (S_ISDIR(stbuf.st_mode)) {
-            sprintf(buffer, "%s/%s/%s", ctx->fs_root, path, VIRTFS_META_DIR);
+            buffer = g_strdup_printf("%s/%s/%s", ctx->fs_root,
+                                     path, VIRTFS_META_DIR);
             err = remove(buffer);
+            g_free(buffer);
             if (err < 0 && errno != ENOENT) {
                 /*
                  * We didn't had the .virtfs_metadata file. May be file created
@@ -912,7 +986,9 @@ static int local_remove(FsContext *ctx, const char *path)
          * Now remove the name from parent directory
          * .virtfs_metadata directory
          */
-        err = remove(local_mapped_attr_path(ctx, path, buffer));
+        buffer = local_mapped_attr_path(ctx, path);
+        err = remove(buffer);
+        g_free(buffer);
         if (err < 0 && errno != ENOENT) {
             /*
              * We didn't had the .virtfs_metadata file. May be file created
@@ -921,7 +997,10 @@ static int local_remove(FsContext *ctx, const char *path)
             goto err_out;
         }
     }
-    return remove(rpath(ctx, path, buffer));
+
+    buffer = rpath(ctx, path);
+    err = remove(buffer);
+    g_free(buffer);
 err_out:
     return err;
 }
@@ -946,10 +1025,14 @@ static int local_fsync(FsContext *ctx, int fid_type,
 
 static int local_statfs(FsContext *s, V9fsPath *fs_path, struct statfs *stbuf)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret;
     char *path = fs_path->data;
 
-    return statfs(rpath(s, path, buffer), stbuf);
+    buffer = rpath(s, path);
+    ret = statfs(buffer, stbuf);
+    g_free(buffer);
+    return ret;
 }
 
 static ssize_t local_lgetxattr(FsContext *ctx, V9fsPath *fs_path,
@@ -1022,7 +1105,7 @@ static int local_unlinkat(FsContext *ctx, V9fsPath *dir,
 {
     int ret;
     V9fsString fullname;
-    char buffer[PATH_MAX];
+    char *buffer;
 
     v9fs_string_init(&fullname);
 
@@ -1033,9 +1116,10 @@ static int local_unlinkat(FsContext *ctx, V9fsPath *dir,
              * If directory remove .virtfs_metadata contained in the
              * directory
              */
-            sprintf(buffer, "%s/%s/%s", ctx->fs_root,
-                    fullname.data, VIRTFS_META_DIR);
+            buffer = g_strdup_printf("%s/%s/%s", ctx->fs_root,
+                                     fullname.data, VIRTFS_META_DIR);
             ret = remove(buffer);
+            g_free(buffer);
             if (ret < 0 && errno != ENOENT) {
                 /*
                  * We didn't had the .virtfs_metadata file. May be file created
@@ -1048,7 +1132,9 @@ static int local_unlinkat(FsContext *ctx, V9fsPath *dir,
          * Now remove the name from parent directory
          * .virtfs_metadata directory.
          */
-        ret = remove(local_mapped_attr_path(ctx, fullname.data, buffer));
+        buffer = local_mapped_attr_path(ctx, fullname.data);
+        ret = remove(buffer);
+        g_free(buffer);
         if (ret < 0 && errno != ENOENT) {
             /*
              * We didn't had the .virtfs_metadata file. May be file created
@@ -1058,10 +1144,12 @@ static int local_unlinkat(FsContext *ctx, V9fsPath *dir,
         }
     }
     /* Remove the name finally */
-    ret = remove(rpath(ctx, fullname.data, buffer));
-    v9fs_string_free(&fullname);
+    buffer = rpath(ctx, fullname.data);
+    ret = remove(buffer);
+    g_free(buffer);
 
 err_out:
+    v9fs_string_free(&fullname);
     return ret;
 }
 

hw/9pfs/virtio-9p-posix-acl.c

@@ -26,8 +26,13 @@
 static ssize_t mp_pacl_getxattr(FsContext *ctx, const char *path,
                                 const char *name, void *value, size_t size)
 {
-    char buffer[PATH_MAX];
-    return lgetxattr(rpath(ctx, path, buffer), MAP_ACL_ACCESS, value, size);
+    char *buffer;
+    ssize_t ret;
+
+    buffer = rpath(ctx, path);
+    ret = lgetxattr(buffer, MAP_ACL_ACCESS, value, size);
+    g_free(buffer);
+    return ret;
 }
 
 static ssize_t mp_pacl_listxattr(FsContext *ctx, const char *path,
@@ -52,17 +57,23 @@ static ssize_t mp_pacl_listxattr(FsContext *ctx, const char *path,
 static int mp_pacl_setxattr(FsContext *ctx, const char *path, const char *name,
                             void *value, size_t size, int flags)
 {
-    char buffer[PATH_MAX];
-    return lsetxattr(rpath(ctx, path, buffer), MAP_ACL_ACCESS, value,
-            size, flags);
+    char *buffer;
+    int ret;
+
+    buffer = rpath(ctx, path);
+    ret = lsetxattr(buffer, MAP_ACL_ACCESS, value, size, flags);
+    g_free(buffer);
+    return ret;
 }
 
 static int mp_pacl_removexattr(FsContext *ctx,
                                const char *path, const char *name)
 {
     int ret;
-    char buffer[PATH_MAX];
-    ret  = lremovexattr(rpath(ctx, path, buffer), MAP_ACL_ACCESS);
+    char *buffer;
+
+    buffer = rpath(ctx, path);
+    ret  = lremovexattr(buffer, MAP_ACL_ACCESS);
     if (ret == -1 && errno == ENODATA) {
         /*
          * We don't get ENODATA error when trying to remove a
@@ -72,14 +83,20 @@ static int mp_pacl_removexattr(FsContext *ctx,
         errno = 0;
         ret = 0;
     }
+    g_free(buffer);
     return ret;
 }
 
 static ssize_t mp_dacl_getxattr(FsContext *ctx, const char *path,
                                 const char *name, void *value, size_t size)
 {
-    char buffer[PATH_MAX];
-    return lgetxattr(rpath(ctx, path, buffer), MAP_ACL_DEFAULT, value, size);
+    char *buffer;
+    ssize_t ret;
+
+    buffer = rpath(ctx, path);
+    ret = lgetxattr(buffer, MAP_ACL_DEFAULT, value, size);
+    g_free(buffer);
+    return ret;
 }
 
 static ssize_t mp_dacl_listxattr(FsContext *ctx, const char *path,
@@ -104,17 +121,23 @@ static ssize_t mp_dacl_listxattr(FsContext *ctx, const char *path,
 static int mp_dacl_setxattr(FsContext *ctx, const char *path, const char *name,
                             void *value, size_t size, int flags)
 {
-    char buffer[PATH_MAX];
-    return lsetxattr(rpath(ctx, path, buffer), MAP_ACL_DEFAULT, value,
-            size, flags);
+    char *buffer;
+    int ret;
+
+    buffer = rpath(ctx, path);
+    ret = lsetxattr(buffer, MAP_ACL_DEFAULT, value, size, flags);
+    g_free(buffer);
+    return ret;
 }
 
 static int mp_dacl_removexattr(FsContext *ctx,
                                const char *path, const char *name)
 {
     int ret;
-    char buffer[PATH_MAX];
-    ret  = lremovexattr(rpath(ctx, path, buffer), MAP_ACL_DEFAULT);
+    char *buffer;
+
+    buffer = rpath(ctx, path);
+    ret  = lremovexattr(buffer, MAP_ACL_DEFAULT);
     if (ret == -1 && errno == ENODATA) {
         /*
          * We don't get ENODATA error when trying to remove a
@@ -124,6 +147,7 @@ static int mp_dacl_removexattr(FsContext *ctx,
         errno = 0;
         ret = 0;
     }
+    g_free(buffer);
     return ret;
 }
 

hw/9pfs/virtio-9p-xattr-user.c

@@ -21,7 +21,9 @@
 static ssize_t mp_user_getxattr(FsContext *ctx, const char *path,
                                 const char *name, void *value, size_t size)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    ssize_t ret;
+
     if (strncmp(name, "user.virtfs.", 12) == 0) {
         /*
          * Don't allow fetch of user.virtfs namesapce
@@ -30,7 +32,10 @@ static ssize_t mp_user_getxattr(FsContext *ctx, const char *path,
         errno = ENOATTR;
         return -1;
     }
-    return lgetxattr(rpath(ctx, path, buffer), name, value, size);
+    buffer = rpath(ctx, path);
+    ret = lgetxattr(buffer, name, value, size);
+    g_free(buffer);
+    return ret;
 }
 
 static ssize_t mp_user_listxattr(FsContext *ctx, const char *path,
@@ -69,7 +74,9 @@ static ssize_t mp_user_listxattr(FsContext *ctx, const char *path,
 static int mp_user_setxattr(FsContext *ctx, const char *path, const char *name,
                             void *value, size_t size, int flags)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret;
+
     if (strncmp(name, "user.virtfs.", 12) == 0) {
         /*
          * Don't allow fetch of user.virtfs namesapce
@@ -78,13 +85,18 @@ static int mp_user_setxattr(FsContext *ctx, const char *path, const char *name,
         errno = EACCES;
         return -1;
     }
-    return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);
+    buffer = rpath(ctx, path);
+    ret = lsetxattr(buffer, name, value, size, flags);
+    g_free(buffer);
+    return ret;
 }
 
 static int mp_user_removexattr(FsContext *ctx,
                                const char *path, const char *name)
 {
-    char buffer[PATH_MAX];
+    char *buffer;
+    int ret;
+
     if (strncmp(name, "user.virtfs.", 12) == 0) {
         /*
          * Don't allow fetch of user.virtfs namesapce
@@ -93,7 +105,10 @@ static int mp_user_removexattr(FsContext *ctx,
         errno = EACCES;
         return -1;
     }
-    return lremovexattr(rpath(ctx, path, buffer), name);
+    buffer = rpath(ctx, path);
+    ret = lremovexattr(buffer, name);
+    g_free(buffer);
+    return ret;
 }
 
 XattrOperations mapped_user_xattr = {

hw/9pfs/virtio-9p-xattr.c

@@ -67,21 +67,24 @@ ssize_t v9fs_list_xattr(FsContext *ctx, const char *path,
                         void *value, size_t vsize)
 {
     ssize_t size = 0;
-    char buffer[PATH_MAX];
+    char *buffer;
     void *ovalue = value;
     XattrOperations *xops;
     char *orig_value, *orig_value_start;
     ssize_t xattr_len, parsed_len = 0, attr_len;
 
     /* Get the actual len */
-    xattr_len = llistxattr(rpath(ctx, path, buffer), value, 0);
+    buffer = rpath(ctx, path);
+    xattr_len = llistxattr(buffer, value, 0);
     if (xattr_len <= 0) {
+        g_free(buffer);
         return xattr_len;
     }
 
     /* Now fetch the xattr and find the actual size */
     orig_value = g_malloc(xattr_len);
-    xattr_len = llistxattr(rpath(ctx, path, buffer), orig_value, xattr_len);
+    xattr_len = llistxattr(buffer, orig_value, xattr_len);
+    g_free(buffer);
 
     /* store the orig pointer */
     orig_value_start = orig_value;

hw/9pfs/virtio-9p-xattr.h

@@ -54,23 +54,38 @@ ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value,
 static inline ssize_t pt_getxattr(FsContext *ctx, const char *path,
                                   const char *name, void *value, size_t size)
 {
-    char buffer[PATH_MAX];
-    return lgetxattr(rpath(ctx, path, buffer), name, value, size);
+    char *buffer;
+    ssize_t ret;
+
+    buffer = rpath(ctx, path);
+    ret = lgetxattr(buffer, name, value, size);
+    g_free(buffer);
+    return ret;
 }
 
 static inline int pt_setxattr(FsContext *ctx, const char *path,
                               const char *name, void *value,
                               size_t size, int flags)
 {
-    char buffer[PATH_MAX];
-    return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);
+    char *buffer;
+    int ret;
+
+    buffer = rpath(ctx, path);
+    ret = lsetxattr(buffer, name, value, size, flags);
+    g_free(buffer);
+    return ret;
 }
 
 static inline int pt_removexattr(FsContext *ctx,
                                  const char *path, const char *name)
 {
-    char buffer[PATH_MAX];
-    return lremovexattr(rpath(ctx, path, buffer), name);
+    char *buffer;
+    int ret;
+
+    buffer = rpath(ctx, path);
+    ret = lremovexattr(path, name);
+    g_free(buffer);
+    return ret;
 }
 
 static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path,

hw/9pfs/virtio-9p.h

@@ -6,6 +6,7 @@
 #include <sys/time.h>
 #include <utime.h>
 #include <sys/resource.h>
+#include <glib.h>
 #include "hw/virtio/virtio.h"
 #include "fsdev/file-op-9p.h"
 #include "fsdev/virtio-9p-marshal.h"
@@ -112,10 +113,9 @@ enum p9_proto_version {
 
 #define FID_REFERENCED          0x1
 #define FID_NON_RECLAIMABLE     0x2
-static inline const char *rpath(FsContext *ctx, const char *path, char *buffer)
+static inline char *rpath(FsContext *ctx, const char *path)
 {
-    snprintf(buffer, PATH_MAX, "%s/%s", ctx->fs_root, path);
-    return buffer;
+    return g_strdup_printf("%s/%s", ctx->fs_root, path);
 }
 
 /*

hw/Makefile.objs

@@ -1,4 +1,4 @@
-devices-dirs-$(CONFIG_REALLY_VIRTFS) += 9pfs/
+devices-dirs-$(call land, $(CONFIG_VIRTIO),$(call land,$(CONFIG_VIRTFS),$(CONFIG_PCI))) += 9pfs/
 devices-dirs-$(CONFIG_ACPI) += acpi/
 devices-dirs-$(CONFIG_SOFTMMU) += audio/
 devices-dirs-$(CONFIG_SOFTMMU) += block/

hw/acpi/cpu_hotplug.c

@@ -43,6 +43,7 @@ void AcpiCpuHotplug_add(ACPIGPE *gpe, AcpiCpuHotplug *g, CPUState *cpu)
 
     *gpe->sts = *gpe->sts | ACPI_CPU_HOTPLUG_STATUS;
     cpu_id = k->get_arch_id(CPU(cpu));
+    g_assert((cpu_id / 8) < ACPI_GPE_PROC_LEN);
     g->sts[cpu_id / 8] |= (1 << (cpu_id % 8));
 }
 

hw/arm/boot.c

@@ -448,6 +448,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
     int initrd_size;
     int is_linux = 0;
     uint64_t elf_entry;
+    int elf_machine;
     hwaddr entry, kernel_load_offset;
     int big_endian;
     static const ARMInsnFixup *primary_loader;
@@ -463,9 +464,11 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
     if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
         primary_loader = bootloader_aarch64;
         kernel_load_offset = KERNEL64_LOAD_ADDR;
+        elf_machine = EM_AARCH64;
     } else {
         primary_loader = bootloader;
         kernel_load_offset = KERNEL_LOAD_ADDR;
+        elf_machine = EM_ARM;
     }
 
     info->dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
@@ -501,7 +504,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
 
     /* Assume that raw images are linux kernels, and ELF images are not.  */
     kernel_size = load_elf(info->kernel_filename, NULL, NULL, &elf_entry,
-                           NULL, NULL, big_endian, ELF_MACHINE, 1);
+                           NULL, NULL, big_endian, elf_machine, 1);
     entry = elf_entry;
     if (kernel_size < 0) {
         kernel_size = load_uimage(info->kernel_filename, &entry, NULL,

hw/arm/exynos4210.c

@@ -143,11 +143,21 @@ Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
     unsigned long mem_size;
     DeviceState *dev;
     SysBusDevice *busdev;
+    ObjectClass *cpu_oc;
+
+    cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, "cortex-a9");
+    assert(cpu_oc);
 
     for (n = 0; n < EXYNOS4210_NCPUS; n++) {
-        s->cpu[n] = cpu_arm_init("cortex-a9");
-        if (!s->cpu[n]) {
-            fprintf(stderr, "Unable to find CPU %d definition\n", n);
+        Object *cpuobj = object_new(object_class_get_name(cpu_oc));
+        Error *err = NULL;
+
+        s->cpu[n] = ARM_CPU(cpuobj);
+        object_property_set_int(cpuobj, EXYNOS4210_SMP_PRIVATE_BASE_ADDR,
+                                "reset-cbar", &error_abort);
+        object_property_set_bool(cpuobj, true, "realized", &err);
+        if (err) {
+            error_report("%s", error_get_pretty(err));
             exit(1);
         }
     }

hw/arm/musicpal.c

@@ -110,10 +110,10 @@
 #define MP_PHY_88E3015          0x01410E20
 
 /* TX descriptor status */
-#define MP_ETH_TX_OWN           (1 << 31)
+#define MP_ETH_TX_OWN           (1U << 31)
 
 /* RX descriptor status */
-#define MP_ETH_RX_OWN           (1 << 31)
+#define MP_ETH_RX_OWN           (1U << 31)
 
 /* Interrupt cause/mask bits */
 #define MP_ETH_IRQ_RX_BIT       0

hw/arm/omap1.c

@@ -809,22 +809,26 @@ static inline void omap_pin_funcmux1_update(struct omap_mpu_state_s *s,
                 uint32_t diff, uint32_t value)
 {
     if (s->compat1509) {
-        if (diff & (1 << 31))			/* MCBSP3_CLK_HIZ_DI */
-            omap_clk_onoff(omap_findclk(s, "mcbsp3.clkx"),
-                            (value >> 31) & 1);
-        if (diff & (1 << 1))			/* CLK32K */
-            omap_clk_onoff(omap_findclk(s, "clk32k_out"),
-                            (~value >> 1) & 1);
+        if (diff & (1U << 31)) {
+            /* MCBSP3_CLK_HIZ_DI */
+            omap_clk_onoff(omap_findclk(s, "mcbsp3.clkx"), (value >> 31) & 1);
+        }
+        if (diff & (1 << 1)) {
+            /* CLK32K */
+            omap_clk_onoff(omap_findclk(s, "clk32k_out"), (~value >> 1) & 1);
+        }
     }
 }
 
 static inline void omap_pin_modconf1_update(struct omap_mpu_state_s *s,
                 uint32_t diff, uint32_t value)
 {
-    if (diff & (1 << 31))			/* CONF_MOD_UART3_CLK_MODE_R */
-         omap_clk_reparent(omap_findclk(s, "uart3_ck"),
-                         omap_findclk(s, ((value >> 31) & 1) ?
-                                 "ck_48m" : "armper_ck"));
+    if (diff & (1U << 31)) {
+        /* CONF_MOD_UART3_CLK_MODE_R */
+        omap_clk_reparent(omap_findclk(s, "uart3_ck"),
+                          omap_findclk(s, ((value >> 31) & 1) ?
+                                       "ck_48m" : "armper_ck"));
+    }
     if (diff & (1 << 30))			/* CONF_MOD_UART2_CLK_MODE_R */
          omap_clk_reparent(omap_findclk(s, "uart2_ck"),
                          omap_findclk(s, ((value >> 30) & 1) ?

hw/arm/pxa2xx.c

@@ -259,7 +259,7 @@ static void pxa2xx_pwrmode_write(CPUARMState *env, const ARMCPRegInfo *ri,
 
     case 1:
         /* Idle */
-        if (!(s->cm_regs[CCCR >> 2] & (1 << 31))) { /* CPDIS */
+        if (!(s->cm_regs[CCCR >> 2] & (1U << 31))) { /* CPDIS */
             cpu_interrupt(CPU(s->cpu), CPU_INTERRUPT_HALT);
             break;
         }
@@ -496,7 +496,7 @@ typedef struct {
 #define SSCR0_SSE	(1 << 7)
 #define SSCR0_RIM	(1 << 22)
 #define SSCR0_TIM	(1 << 23)
-#define SSCR0_MOD	(1 << 31)
+#define SSCR0_MOD       (1U << 31)
 #define SSCR0_DSS(x)	(((((x) >> 16) & 0x10) | ((x) & 0xf)) + 1)
 #define SSCR1_RIE	(1 << 0)
 #define SSCR1_TIE	(1 << 1)
@@ -1006,7 +1006,7 @@ static void pxa2xx_rtc_write(void *opaque, hwaddr addr,
 
     switch (addr) {
     case RTTR:
-        if (!(s->rttr & (1 << 31))) {
+        if (!(s->rttr & (1U << 31))) {
             pxa2xx_rtc_hzupdate(s);
             s->rttr = value;
             pxa2xx_rtc_alarm_update(s, s->rtsr);

hw/arm/pxa2xx_gpio.c

@@ -110,7 +110,7 @@ static void pxa2xx_gpio_set(void *opaque, int line, int level)
     }
 
     bank = line >> 5;
-    mask = 1 << (line & 31);
+    mask = 1U << (line & 31);
 
     if (level) {
         s->status[bank] |= s->rising[bank] & mask &

hw/arm/pxa2xx_pic.c

@@ -105,7 +105,7 @@ static inline uint32_t pxa2xx_pic_highest(PXA2xxPICState *s) {
 
     for (i = PXA2XX_PIC_SRCS - 1; i >= 0; i --) {
         irq = s->priority[i] & 0x3f;
-        if ((s->priority[i] & (1 << 31)) && irq < PXA2XX_PIC_SRCS) {
+        if ((s->priority[i] & (1U << 31)) && irq < PXA2XX_PIC_SRCS) {
             /* Source peripheral ID is valid.  */
             bit = 1 << (irq & 31);
             int_set = (irq >= 32);
@@ -119,7 +119,7 @@ static inline uint32_t pxa2xx_pic_highest(PXA2xxPICState *s) {
             if (mask[int_set] & bit & ~s->is_fiq[int_set]) {
                 /* IRQ asserted */
                 ichp &= 0x0000ffff;
-                ichp |= (1 << 31) | (irq << 16);
+                ichp |= (1U << 31) | (irq << 16);
             }
         }
     }

hw/arm/realview.c

@@ -18,6 +18,7 @@
 #include "hw/i2c/i2c.h"
 #include "sysemu/blockdev.h"
 #include "exec/address-spaces.h"
+#include "qemu/error-report.h"
 
 #define SMP_BOOT_ADDR 0xe0000000
 #define SMP_BOOTREG_ADDR 0x10000030
@@ -49,6 +50,7 @@ static void realview_init(QEMUMachineInitArgs *args,
 {
     ARMCPU *cpu = NULL;
     CPUARMState *env;
+    ObjectClass *cpu_oc;
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *ram_lo = g_new(MemoryRegion, 1);
     MemoryRegion *ram_hi = g_new(MemoryRegion, 1);
@@ -70,12 +72,14 @@ static void realview_init(QEMUMachineInitArgs *args,
     uint32_t sys_id;
     ram_addr_t low_ram_size;
     ram_addr_t ram_size = args->ram_size;
+    hwaddr periphbase = 0;
 
     switch (board_type) {
     case BOARD_EB:
         break;
     case BOARD_EB_MPCORE:
         is_mpcore = 1;
+        periphbase = 0x10100000;
         break;
     case BOARD_PB_A8:
         is_pb = 1;
@@ -83,16 +87,37 @@ static void realview_init(QEMUMachineInitArgs *args,
     case BOARD_PBX_A9:
         is_mpcore = 1;
         is_pb = 1;
+        periphbase = 0x1f000000;
         break;
     }
+
+    cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, args->cpu_model);
+    if (!cpu_oc) {
+        fprintf(stderr, "Unable to find CPU definition\n");
+        exit(1);
+    }
+
     for (n = 0; n < smp_cpus; n++) {
-        cpu = cpu_arm_init(args->cpu_model);
-        if (!cpu) {
-            fprintf(stderr, "Unable to find CPU definition\n");
+        Object *cpuobj = object_new(object_class_get_name(cpu_oc));
+        Error *err = NULL;
+
+        if (is_pb && is_mpcore) {
+            object_property_set_int(cpuobj, periphbase, "reset-cbar", &err);
+            if (err) {
+                error_report("%s", error_get_pretty(err));
+                exit(1);
+            }
+        }
+
+        object_property_set_bool(cpuobj, true, "realized", &err);
+        if (err) {
+            error_report("%s", error_get_pretty(err));
             exit(1);
         }
-        cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ);
+
+        cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpuobj), ARM_CPU_IRQ);
     }
+    cpu = ARM_CPU(first_cpu);
     env = &cpu->env;
     if (arm_feature(env, ARM_FEATURE_V7)) {
         if (is_mpcore) {
@@ -141,16 +166,10 @@ static void realview_init(QEMUMachineInitArgs *args,
     sysbus_mmio_map(SYS_BUS_DEVICE(sysctl), 0, 0x10000000);
 
     if (is_mpcore) {
-        hwaddr periphbase;
         dev = qdev_create(NULL, is_pb ? "a9mpcore_priv": "realview_mpcore");
         qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
         qdev_init_nofail(dev);
         busdev = SYS_BUS_DEVICE(dev);
-        if (is_pb) {
-            periphbase = 0x1f000000;
-        } else {
-            periphbase = 0x10100000;
-        }
         sysbus_mmio_map(busdev, 0, periphbase);
         for (n = 0; n < smp_cpus; n++) {
             sysbus_connect_irq(busdev, n, cpu_irq[n]);

hw/arm/spitz.c

@@ -658,14 +658,15 @@ static void spitz_adc_temp_on(void *opaque, int line, int level)
         max111x_set_input(max1111, MAX1111_BATT_TEMP, 0);
 }
 
-static int corgi_ssp_init(SSISlave *dev)
+static int corgi_ssp_init(SSISlave *d)
 {
-    CorgiSSPState *s = FROM_SSI_SLAVE(CorgiSSPState, dev);
+    DeviceState *dev = DEVICE(d);
+    CorgiSSPState *s = FROM_SSI_SLAVE(CorgiSSPState, d);
 
-    qdev_init_gpio_in(&dev->qdev, corgi_ssp_gpio_cs, 3);
-    s->bus[0] = ssi_create_bus(&dev->qdev, "ssi0");
-    s->bus[1] = ssi_create_bus(&dev->qdev, "ssi1");
-    s->bus[2] = ssi_create_bus(&dev->qdev, "ssi2");
+    qdev_init_gpio_in(dev, corgi_ssp_gpio_cs, 3);
+    s->bus[0] = ssi_create_bus(dev, "ssi0");
+    s->bus[1] = ssi_create_bus(dev, "ssi1");
+    s->bus[2] = ssi_create_bus(dev, "ssi2");
 
     return 0;
 }

hw/arm/vexpress.c

@@ -32,6 +32,7 @@
 #include "sysemu/blockdev.h"
 #include "hw/block/flash.h"
 #include "sysemu/device_tree.h"
+#include "qemu/error-report.h"
 #include <libfdt.h>
 
 #define VEXPRESS_BOARD_ID 0x8e0
@@ -173,6 +174,64 @@ struct VEDBoardInfo {
     DBoardInitFn *init;
 };
 
+static void init_cpus(const char *cpu_model, const char *privdev,
+                      hwaddr periphbase, qemu_irq *pic)
+{
+    ObjectClass *cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
+    DeviceState *dev;
+    SysBusDevice *busdev;
+    int n;
+
+    if (!cpu_oc) {
+        fprintf(stderr, "Unable to find CPU definition\n");
+        exit(1);
+    }
+
+    /* Create the actual CPUs */
+    for (n = 0; n < smp_cpus; n++) {
+        Object *cpuobj = object_new(object_class_get_name(cpu_oc));
+        Error *err = NULL;
+
+        object_property_set_int(cpuobj, periphbase, "reset-cbar", &err);
+        if (err) {
+            error_report("%s", error_get_pretty(err));
+            exit(1);
+        }
+        object_property_set_bool(cpuobj, true, "realized", &err);
+        if (err) {
+            error_report("%s", error_get_pretty(err));
+            exit(1);
+        }
+    }
+
+    /* Create the private peripheral devices (including the GIC);
+     * this must happen after the CPUs are created because a15mpcore_priv
+     * wires itself up to the CPU's generic_timer gpio out lines.
+     */
+    dev = qdev_create(NULL, privdev);
+    qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
+    qdev_init_nofail(dev);
+    busdev = SYS_BUS_DEVICE(dev);
+    sysbus_mmio_map(busdev, 0, periphbase);
+
+    /* Interrupts [42:0] are from the motherboard;
+     * [47:43] are reserved; [63:48] are daughterboard
+     * peripherals. Note that some documentation numbers
+     * external interrupts starting from 32 (because there
+     * are internal interrupts 0..31).
+     */
+    for (n = 0; n < 64; n++) {
+        pic[n] = qdev_get_gpio_in(dev, n);
+    }
+
+    /* Connect the CPUs to the GIC */
+    for (n = 0; n < smp_cpus; n++) {
+        DeviceState *cpudev = DEVICE(qemu_get_cpu(n));
+
+        sysbus_connect_irq(busdev, n, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
+    }
+}
+
 static void a9_daughterboard_init(const VEDBoardInfo *daughterboard,
                                   ram_addr_t ram_size,
                                   const char *cpu_model,
@@ -181,25 +240,12 @@ static void a9_daughterboard_init(const VEDBoardInfo *daughterboard,
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *lowram = g_new(MemoryRegion, 1);
-    DeviceState *dev;
-    SysBusDevice *busdev;
-    int n;
-    qemu_irq cpu_irq[4];
     ram_addr_t low_ram_size;
 
     if (!cpu_model) {
         cpu_model = "cortex-a9";
     }
 
-    for (n = 0; n < smp_cpus; n++) {
-        ARMCPU *cpu = cpu_arm_init(cpu_model);
-        if (!cpu) {
-            fprintf(stderr, "Unable to find CPU definition\n");
-            exit(1);
-        }
-        cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ);
-    }
-
     if (ram_size > 0x40000000) {
         /* 1GB is the maximum the address space permits */
         fprintf(stderr, "vexpress-a9: cannot model more than 1GB RAM\n");
@@ -221,23 +267,7 @@ static void a9_daughterboard_init(const VEDBoardInfo *daughterboard,
     memory_region_add_subregion(sysmem, 0x60000000, ram);
 
     /* 0x1e000000 A9MPCore (SCU) private memory region */
-    dev = qdev_create(NULL, "a9mpcore_priv");
-    qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
-    qdev_init_nofail(dev);
-    busdev = SYS_BUS_DEVICE(dev);
-    sysbus_mmio_map(busdev, 0, 0x1e000000);
-    for (n = 0; n < smp_cpus; n++) {
-        sysbus_connect_irq(busdev, n, cpu_irq[n]);
-    }
-    /* Interrupts [42:0] are from the motherboard;
-     * [47:43] are reserved; [63:48] are daughterboard
-     * peripherals. Note that some documentation numbers
-     * external interrupts starting from 32 (because the
-     * A9MP has internal interrupts 0..31).
-     */
-    for (n = 0; n < 64; n++) {
-        pic[n] = qdev_get_gpio_in(dev, n);
-    }
+    init_cpus(cpu_model, "a9mpcore_priv", 0x1e000000, pic);
 
     /* Daughterboard peripherals : 0x10020000 .. 0x20000000 */
 
@@ -296,29 +326,14 @@ static void a15_daughterboard_init(const VEDBoardInfo *daughterboard,
                                    const char *cpu_model,
                                    qemu_irq *pic)
 {
-    int n;
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
-    qemu_irq cpu_irq[4];
-    DeviceState *dev;
-    SysBusDevice *busdev;
 
     if (!cpu_model) {
         cpu_model = "cortex-a15";
     }
 
-    for (n = 0; n < smp_cpus; n++) {
-        ARMCPU *cpu;
-
-        cpu = cpu_arm_init(cpu_model);
-        if (!cpu) {
-            fprintf(stderr, "Unable to find CPU definition\n");
-            exit(1);
-        }
-        cpu_irq[n] = qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ);
-    }
-
     {
         /* We have to use a separate 64 bit variable here to avoid the gcc
          * "comparison is always false due to limited range of data type"
@@ -337,23 +352,7 @@ static void a15_daughterboard_init(const VEDBoardInfo *daughterboard,
     memory_region_add_subregion(sysmem, 0x80000000, ram);
 
     /* 0x2c000000 A15MPCore private memory region (GIC) */
-    dev = qdev_create(NULL, "a15mpcore_priv");
-    qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
-    qdev_init_nofail(dev);
-    busdev = SYS_BUS_DEVICE(dev);
-    sysbus_mmio_map(busdev, 0, 0x2c000000);
-    for (n = 0; n < smp_cpus; n++) {
-        sysbus_connect_irq(busdev, n, cpu_irq[n]);
-    }
-    /* Interrupts [42:0] are from the motherboard;
-     * [47:43] are reserved; [63:48] are daughterboard
-     * peripherals. Note that some documentation numbers
-     * external interrupts starting from 32 (because there
-     * are internal interrupts 0..31).
-     */
-    for (n = 0; n < 64; n++) {
-        pic[n] = qdev_get_gpio_in(dev, n);
-    }
+    init_cpus(cpu_model, "a15mpcore_priv", 0x2c000000, pic);
 
     /* A15 daughterboard peripherals: */
 

hw/arm/virt.c

@@ -390,6 +390,12 @@ static void machvirt_init(QEMUMachineInitArgs *args)
         if (n > 0) {
             object_property_set_bool(cpuobj, true, "start-powered-off", NULL);
         }
+
+        if (object_property_find(cpuobj, "reset-cbar", NULL)) {
+            object_property_set_int(cpuobj, vbi->memmap[VIRT_CPUPERIPHS].base,
+                                    "reset-cbar", &error_abort);
+        }
+
         object_property_set_bool(cpuobj, true, "realized", NULL);
     }
     fdt_add_cpu_nodes(vbi);

hw/audio/fmopl.c

@@ -223,13 +223,13 @@ static void *cur_chip = NULL;	/* current chip point */
 /* static OPLSAMPLE  *bufL,*bufR; */
 static OPL_CH *S_CH;
 static OPL_CH *E_CH;
-OPL_SLOT *SLOT7_1,*SLOT7_2,*SLOT8_1,*SLOT8_2;
+static OPL_SLOT *SLOT7_1, *SLOT7_2, *SLOT8_1, *SLOT8_2;
 
 static INT32 outd[1];
 static INT32 ams;
 static INT32 vib;
-INT32  *ams_table;
-INT32  *vib_table;
+static INT32 *ams_table;
+static INT32 *vib_table;
 static INT32 amsIncr;
 static INT32 vibIncr;
 static INT32 feedback2;		/* connect for SLOT 2 */

hw/block/dataplane/virtio-blk.c

@@ -23,6 +23,7 @@
 #include "virtio-blk.h"
 #include "block/aio.h"
 #include "hw/virtio/virtio-bus.h"
+#include "monitor/monitor.h" /* for object_add() */
 
 enum {
     SEG_MAX = 126,                  /* maximum number of I/O segments */
@@ -44,8 +45,6 @@ struct VirtIOBlockDataPlane {
     bool started;
     bool starting;
     bool stopping;
-    QEMUBH *start_bh;
-    QemuThread thread;
 
     VirtIOBlkConf *blk;
     int fd;                         /* image file descriptor */
@@ -59,12 +58,14 @@ struct VirtIOBlockDataPlane {
      * (because you don't own the file descriptor or handle; you just
      * use it).
      */
+    IOThread *iothread;
+    bool internal_iothread;
     AioContext *ctx;
     EventNotifier io_notifier;      /* Linux AIO completion */
     EventNotifier host_notifier;    /* doorbell */
 
     IOQueue ioqueue;                /* Linux AIO queue (should really be per
-                                       dataplane thread) */
+                                       IOThread) */
     VirtIOBlockRequest requests[REQ_MAX]; /* pool of requests, managed by the
                                              queue */
 
@@ -342,26 +343,7 @@ static void handle_io(EventNotifier *e)
     }
 }
 
-static void *data_plane_thread(void *opaque)
-{
-    VirtIOBlockDataPlane *s = opaque;
-
-    while (!s->stopping || s->num_reqs > 0) {
-        aio_poll(s->ctx, true);
-    }
-    return NULL;
-}
-
-static void start_data_plane_bh(void *opaque)
-{
-    VirtIOBlockDataPlane *s = opaque;
-
-    qemu_bh_delete(s->start_bh);
-    s->start_bh = NULL;
-    qemu_thread_create(&s->thread, data_plane_thread,
-                       s, QEMU_THREAD_JOINABLE);
-}
-
+/* Context: QEMU global mutex held */
 void virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *blk,
                                   VirtIOBlockDataPlane **dataplane,
                                   Error **errp)
@@ -408,12 +390,33 @@ void virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *blk,
     s->fd = fd;
     s->blk = blk;
 
+    if (blk->iothread) {
+        s->internal_iothread = false;
+        s->iothread = blk->iothread;
+    } else {
+        /* Create per-device IOThread if none specified */
+        Error *local_err = NULL;
+
+        s->internal_iothread = true;
+        object_add(TYPE_IOTHREAD, vdev->name, NULL, NULL, &local_err);
+        if (error_is_set(&local_err)) {
+            error_propagate(errp, local_err);
+            g_free(s);
+            return;
+        }
+        s->iothread = iothread_find(vdev->name);
+        assert(s->iothread);
+    }
+    object_ref(OBJECT(s->iothread));
+    s->ctx = iothread_get_aio_context(s->iothread);
+
     /* Prevent block operations that conflict with data plane thread */
     bdrv_set_in_use(blk->conf.bs, 1);
 
     *dataplane = s;
 }
 
+/* Context: QEMU global mutex held */
 void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
 {
     if (!s) {
@@ -422,9 +425,14 @@ void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
 
     virtio_blk_data_plane_stop(s);
     bdrv_set_in_use(s->blk->conf.bs, 0);
+    object_unref(OBJECT(s->iothread));
+    if (s->internal_iothread) {
+        object_unparent(OBJECT(s->iothread));
+    }
     g_free(s);
 }
 
+/* Context: QEMU global mutex held */
 void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
 {
     BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s->vdev)));
@@ -448,8 +456,6 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
         return;
     }
 
-    s->ctx = aio_context_new();
-
     /* Set up guest notifier (irq) */
     if (k->set_guest_notifiers(qbus->parent, 1, true) != 0) {
         fprintf(stderr, "virtio-blk failed to set guest notifier, "
@@ -464,7 +470,6 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
         exit(1);
     }
     s->host_notifier = *virtio_queue_get_host_notifier(vq);
-    aio_set_event_notifier(s->ctx, &s->host_notifier, handle_notify);
 
     /* Set up ioqueue */
     ioq_init(&s->ioqueue, s->fd, REQ_MAX);
@@ -472,7 +477,6 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
         ioq_put_iocb(&s->ioqueue, &s->requests[i].iocb);
     }
     s->io_notifier = *ioq_get_notifier(&s->ioqueue);
-    aio_set_event_notifier(s->ctx, &s->io_notifier, handle_io);
 
     s->starting = false;
     s->started = true;
@@ -481,11 +485,14 @@ void virtio_blk_data_plane_start(VirtIOBlockDataPlane *s)
     /* Kick right away to begin processing requests already in vring */
     event_notifier_set(virtio_queue_get_host_notifier(vq));
 
-    /* Spawn thread in BH so it inherits iothread cpusets */
-    s->start_bh = qemu_bh_new(start_data_plane_bh, s);
-    qemu_bh_schedule(s->start_bh);
+    /* Get this show started by hooking up our callbacks */
+    aio_context_acquire(s->ctx);
+    aio_set_event_notifier(s->ctx, &s->host_notifier, handle_notify);
+    aio_set_event_notifier(s->ctx, &s->io_notifier, handle_io);
+    aio_context_release(s->ctx);
 }
 
+/* Context: QEMU global mutex held */
 void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s)
 {
     BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(s->vdev)));
@@ -496,27 +503,32 @@ void virtio_blk_data_plane_stop(VirtIOBlockDataPlane *s)
     s->stopping = true;
     trace_virtio_blk_data_plane_stop(s);
 
-    /* Stop thread or cancel pending thread creation BH */
-    if (s->start_bh) {
-        qemu_bh_delete(s->start_bh);
-        s->start_bh = NULL;
-    } else {
-        aio_notify(s->ctx);
-        qemu_thread_join(&s->thread);
+    aio_context_acquire(s->ctx);
+
+    /* Stop notifications for new requests from guest */
+    aio_set_event_notifier(s->ctx, &s->host_notifier, NULL);
+
+    /* Complete pending requests */
+    while (s->num_reqs > 0) {
+        aio_poll(s->ctx, true);
     }
 
+    /* Stop ioq callbacks (there are no pending requests left) */
     aio_set_event_notifier(s->ctx, &s->io_notifier, NULL);
+
+    aio_context_release(s->ctx);
+
+    /* Sync vring state back to virtqueue so that non-dataplane request
+     * processing can continue when we disable the host notifier below.
+     */
+    vring_teardown(&s->vring, s->vdev, 0);
+
     ioq_cleanup(&s->ioqueue);
-
-    aio_set_event_notifier(s->ctx, &s->host_notifier, NULL);
     k->set_host_notifier(qbus->parent, 0, false);
 
-    aio_context_unref(s->ctx);
-
     /* Clean up guest notifier (irq) */
     k->set_guest_notifiers(qbus->parent, 1, false);
 
-    vring_teardown(&s->vring, s->vdev, 0);
     s->started = false;
     s->stopping = false;
 }

hw/block/m25p80.c

@@ -241,7 +241,8 @@ typedef enum {
 } CMDState;
 
 typedef struct Flash {
-    SSISlave ssidev;
+    SSISlave parent_obj;
+
     uint32_t r;
 
     BlockDriverState *bdrv;
@@ -545,7 +546,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
 
 static int m25p80_cs(SSISlave *ss, bool select)
 {
-    Flash *s = FROM_SSI_SLAVE(Flash, ss);
+    Flash *s = M25P80(ss);
 
     if (select) {
         s->len = 0;
@@ -561,7 +562,7 @@ static int m25p80_cs(SSISlave *ss, bool select)
 
 static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
 {
-    Flash *s = FROM_SSI_SLAVE(Flash, ss);
+    Flash *s = M25P80(ss);
     uint32_t r = 0;
 
     switch (s->state) {
@@ -610,7 +611,7 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
 static int m25p80_init(SSISlave *ss)
 {
     DriveInfo *dinfo;
-    Flash *s = FROM_SSI_SLAVE(Flash, ss);
+    Flash *s = M25P80(ss);
     M25P80Class *mc = M25P80_GET_CLASS(s);
 
     s->pi = mc->pi;

hw/char/pl011.c

@@ -20,6 +20,7 @@ typedef struct PL011State {
     uint32_t readbuff;
     uint32_t flags;
     uint32_t lcr;
+    uint32_t rsr;
     uint32_t cr;
     uint32_t dmacr;
     uint32_t int_enabled;
@@ -81,13 +82,14 @@ static uint64_t pl011_read(void *opaque, hwaddr offset,
         }
         if (s->read_count == s->read_trigger - 1)
             s->int_level &= ~ PL011_INT_RX;
+        s->rsr = c >> 8;
         pl011_update(s);
         if (s->chr) {
             qemu_chr_accept_input(s->chr);
         }
         return c;
-    case 1: /* UARTCR */
-        return 0;
+    case 1: /* UARTRSR */
+        return s->rsr;
     case 6: /* UARTFR */
         return s->flags;
     case 8: /* UARTILPR */
@@ -146,8 +148,8 @@ static void pl011_write(void *opaque, hwaddr offset,
         s->int_level |= PL011_INT_TX;
         pl011_update(s);
         break;
-    case 1: /* UARTCR */
-        s->cr = value;
+    case 1: /* UARTRSR/UARTECR */
+        s->rsr = 0;
         break;
     case 6: /* UARTFR */
         /* Writes to Flag register are ignored.  */
@@ -162,6 +164,11 @@ static void pl011_write(void *opaque, hwaddr offset,
         s->fbrd = value;
         break;
     case 11: /* UARTLCR_H */
+        /* Reset the FIFO state on FIFO enable or disable */
+        if ((s->lcr ^ value) & 0x10) {
+            s->read_count = 0;
+            s->read_pos = 0;
+        }
         s->lcr = value;
         pl011_set_read_trigger(s);
         break;
@@ -214,7 +221,7 @@ static void pl011_put_fifo(void *opaque, uint32_t value)
     s->read_fifo[slot] = value;
     s->read_count++;
     s->flags &= ~PL011_FLAG_RXFE;
-    if (s->cr & 0x10 || s->read_count == 16) {
+    if (!(s->lcr & 0x10) || s->read_count == 16) {
         s->flags |= PL011_FLAG_RXFF;
     }
     if (s->read_count == s->read_trigger) {
@@ -242,13 +249,14 @@ static const MemoryRegionOps pl011_ops = {
 
 static const VMStateDescription vmstate_pl011 = {
     .name = "pl011",
-    .version_id = 1,
-    .minimum_version_id = 1,
-    .minimum_version_id_old = 1,
+    .version_id = 2,
+    .minimum_version_id = 2,
+    .minimum_version_id_old = 2,
     .fields      = (VMStateField[]) {
         VMSTATE_UINT32(readbuff, PL011State),
         VMSTATE_UINT32(flags, PL011State),
         VMSTATE_UINT32(lcr, PL011State),
+        VMSTATE_UINT32(rsr, PL011State),
         VMSTATE_UINT32(cr, PL011State),
         VMSTATE_UINT32(dmacr, PL011State),
         VMSTATE_UINT32(int_enabled, PL011State),

hw/char/sclpconsole-lm.c

@@ -41,7 +41,6 @@ typedef struct SCLPConsoleLM {
     uint32_t write_errors;      /* errors writing to char layer           */
     uint32_t length;            /* length of byte stream in buffer        */
     uint8_t buf[SIZE_CONSOLE_BUFFER];
-    qemu_irq irq_console_read;
 } SCLPConsoleLM;
 
 /*
@@ -68,13 +67,15 @@ static int chr_can_read(void *opaque)
     return 0;
 }
 
-static void receive_from_chr_layer(SCLPConsoleLM *scon, const uint8_t *buf,
-                                   int size)
+static void chr_read(void *opaque, const uint8_t *buf, int size)
 {
+    SCLPConsoleLM *scon = opaque;
+
     assert(size == 1);
 
     if (*buf == '\r' || *buf == '\n') {
         scon->event.event_pending = true;
+        sclp_service_interrupt(0);
         return;
     }
     scon->buf[scon->length] = *buf;
@@ -84,20 +85,6 @@ static void receive_from_chr_layer(SCLPConsoleLM *scon, const uint8_t *buf,
     }
 }
 
-/*
- * Send data from a char device over to the guest
- */
-static void chr_read(void *opaque, const uint8_t *buf, int size)
-{
-    SCLPConsoleLM *scon = opaque;
-
-    receive_from_chr_layer(scon, buf, size);
-    if (scon->event.event_pending) {
-        /* trigger SCLP read operation */
-        qemu_irq_raise(scon->irq_console_read);
-    }
-}
-
 /* functions to be called by event facility */
 
 static bool can_handle_event(uint8_t type)
@@ -298,11 +285,6 @@ static int write_event_data(SCLPEvent *event, EventBufferHeader *ebh)
     return SCLP_RC_NORMAL_COMPLETION;
 }
 
-static void trigger_console_data(void *opaque, int n, int level)
-{
-    sclp_service_interrupt(0);
-}
-
 /* functions for live migration */
 
 static const VMStateDescription vmstate_sclplmconsole = {
@@ -338,7 +320,6 @@ static int console_init(SCLPEvent *event)
     if (scon->chr) {
         qemu_chr_add_handlers(scon->chr, chr_can_read, chr_read, NULL, scon);
     }
-    scon->irq_console_read = *qemu_allocate_irqs(trigger_console_data, NULL, 1);
 
     return 0;
 }

hw/char/sclpconsole.c

@@ -36,7 +36,6 @@ typedef struct SCLPConsole {
     uint32_t iov_bs;        /* offset in buf for char layer read operation */
     uint32_t iov_data_len;  /* length of byte stream in buffer             */
     uint32_t iov_sclp_rest; /* length of byte stream not read via SCLP     */
-    qemu_irq irq_read_vt220;
 } SCLPConsole;
 
 /* character layer call-back functions */
@@ -49,11 +48,12 @@ static int chr_can_read(void *opaque)
     return SIZE_BUFFER_VT220 - scon->iov_data_len;
 }
 
-/* Receive n bytes from character layer, save in iov buffer,
- * and set event pending */
-static void receive_from_chr_layer(SCLPConsole *scon, const uint8_t *buf,
-                                   int size)
+/* Send data from a char device over to the guest */
+static void chr_read(void *opaque, const uint8_t *buf, int size)
 {
+    SCLPConsole *scon = opaque;
+
+    assert(scon);
     /* read data must fit into current buffer */
     assert(size <= SIZE_BUFFER_VT220 - scon->iov_data_len);
 
@@ -63,18 +63,7 @@ static void receive_from_chr_layer(SCLPConsole *scon, const uint8_t *buf,
     scon->iov_sclp_rest += size;
     scon->iov_bs += size;
     scon->event.event_pending = true;
-}
-
-/* Send data from a char device over to the guest */
-static void chr_read(void *opaque, const uint8_t *buf, int size)
-{
-    SCLPConsole *scon = opaque;
-
-    assert(scon);
-
-    receive_from_chr_layer(scon, buf, size);
-    /* trigger SCLP read operation */
-    qemu_irq_raise(scon->irq_read_vt220);
+    sclp_service_interrupt(0);
 }
 
 /* functions to be called by event facility */
@@ -192,11 +181,6 @@ static int write_event_data(SCLPEvent *event, EventBufferHeader *evt_buf_hdr)
     return rc;
 }
 
-static void trigger_ascii_console_data(void *opaque, int n, int level)
-{
-    sclp_service_interrupt(0);
-}
-
 static const VMStateDescription vmstate_sclpconsole = {
     .name = "sclpconsole",
     .version_id = 0,
@@ -232,8 +216,6 @@ static int console_init(SCLPEvent *event)
         qemu_chr_add_handlers(scon->chr, chr_can_read,
                               chr_read, NULL, scon);
     }
-    scon->irq_read_vt220 = *qemu_allocate_irqs(trigger_ascii_console_data,
-                                               NULL, 1);
 
     return 0;
 }

hw/char/virtio-console.c

@@ -15,8 +15,13 @@
 #include "trace.h"
 #include "hw/virtio/virtio-serial.h"
 
+#define TYPE_VIRTIO_CONSOLE_SERIAL_PORT "virtserialport"
+#define VIRTIO_CONSOLE(obj) \
+    OBJECT_CHECK(VirtConsole, (obj), TYPE_VIRTIO_CONSOLE_SERIAL_PORT)
+
 typedef struct VirtConsole {
-    VirtIOSerialPort port;
+    VirtIOSerialPort parent_obj;
+
     CharDriverState *chr;
     guint watch;
 } VirtConsole;
@@ -31,7 +36,7 @@ static gboolean chr_write_unblocked(GIOChannel *chan, GIOCondition cond,
     VirtConsole *vcon = opaque;
 
     vcon->watch = 0;
-    virtio_serial_throttle_port(&vcon->port, false);
+    virtio_serial_throttle_port(VIRTIO_SERIAL_PORT(vcon), false);
     return FALSE;
 }
 
@@ -39,7 +44,7 @@ static gboolean chr_write_unblocked(GIOChannel *chan, GIOCondition cond,
 static ssize_t flush_buf(VirtIOSerialPort *port,
                          const uint8_t *buf, ssize_t len)
 {
-    VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+    VirtConsole *vcon = VIRTIO_CONSOLE(port);
     ssize_t ret;
 
     if (!vcon->chr) {
@@ -75,7 +80,7 @@ static ssize_t flush_buf(VirtIOSerialPort *port,
 /* Callback function that's called when the guest opens/closes the port */
 static void set_guest_connected(VirtIOSerialPort *port, int guest_connected)
 {
-    VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+    VirtConsole *vcon = VIRTIO_CONSOLE(port);
 
     if (!vcon->chr) {
         return;
@@ -88,45 +93,49 @@ static int chr_can_read(void *opaque)
 {
     VirtConsole *vcon = opaque;
 
-    return virtio_serial_guest_ready(&vcon->port);
+    return virtio_serial_guest_ready(VIRTIO_SERIAL_PORT(vcon));
 }
 
 /* Send data from a char device over to the guest */
 static void chr_read(void *opaque, const uint8_t *buf, int size)
 {
     VirtConsole *vcon = opaque;
+    VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(vcon);
 
-    trace_virtio_console_chr_read(vcon->port.id, size);
-    virtio_serial_write(&vcon->port, buf, size);
+    trace_virtio_console_chr_read(port->id, size);
+    virtio_serial_write(port, buf, size);
 }
 
 static void chr_event(void *opaque, int event)
 {
     VirtConsole *vcon = opaque;
+    VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(vcon);
 
-    trace_virtio_console_chr_event(vcon->port.id, event);
+    trace_virtio_console_chr_event(port->id, event);
     switch (event) {
     case CHR_EVENT_OPENED:
-        virtio_serial_open(&vcon->port);
+        virtio_serial_open(port);
         break;
     case CHR_EVENT_CLOSED:
         if (vcon->watch) {
             g_source_remove(vcon->watch);
             vcon->watch = 0;
         }
-        virtio_serial_close(&vcon->port);
+        virtio_serial_close(port);
         break;
     }
 }
 
-static int virtconsole_initfn(VirtIOSerialPort *port)
+static void virtconsole_realize(DeviceState *dev, Error **errp)
 {
-    VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
-    VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_GET_CLASS(port);
+    VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(dev);
+    VirtConsole *vcon = VIRTIO_CONSOLE(dev);
+    VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_GET_CLASS(dev);
 
     if (port->id == 0 && !k->is_console) {
-        error_report("Port number 0 on virtio-serial devices reserved for virtconsole devices for backward compatibility.");
-        return -1;
+        error_setg(errp, "Port number 0 on virtio-serial devices reserved "
+                   "for virtconsole devices for backward compatibility.");
+        return;
     }
 
     if (vcon->chr) {
@@ -134,43 +143,27 @@ static int virtconsole_initfn(VirtIOSerialPort *port)
         qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
                               vcon);
     }
-
-    return 0;
 }
 
-static int virtconsole_exitfn(VirtIOSerialPort *port)
+static void virtconsole_unrealize(DeviceState *dev, Error **errp)
 {
-    VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+    VirtConsole *vcon = VIRTIO_CONSOLE(dev);
 
     if (vcon->watch) {
         g_source_remove(vcon->watch);
     }
-
-    return 0;
 }
 
-static Property virtconsole_properties[] = {
-    DEFINE_PROP_CHR("chardev", VirtConsole, chr),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
 static void virtconsole_class_init(ObjectClass *klass, void *data)
 {
-    DeviceClass *dc = DEVICE_CLASS(klass);
     VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_CLASS(klass);
 
     k->is_console = true;
-    k->init = virtconsole_initfn;
-    k->exit = virtconsole_exitfn;
-    k->have_data = flush_buf;
-    k->set_guest_connected = set_guest_connected;
-    dc->props = virtconsole_properties;
 }
 
 static const TypeInfo virtconsole_info = {
     .name          = "virtconsole",
-    .parent        = TYPE_VIRTIO_SERIAL_PORT,
-    .instance_size = sizeof(VirtConsole),
+    .parent        = TYPE_VIRTIO_CONSOLE_SERIAL_PORT,
     .class_init    = virtconsole_class_init,
 };
 
@@ -184,15 +177,15 @@ static void virtserialport_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtIOSerialPortClass *k = VIRTIO_SERIAL_PORT_CLASS(klass);
 
-    k->init = virtconsole_initfn;
-    k->exit = virtconsole_exitfn;
+    k->realize = virtconsole_realize;
+    k->unrealize = virtconsole_unrealize;
     k->have_data = flush_buf;
     k->set_guest_connected = set_guest_connected;
     dc->props = virtserialport_properties;
 }
 
 static const TypeInfo virtserialport_info = {
-    .name          = "virtserialport",
+    .name          = TYPE_VIRTIO_CONSOLE_SERIAL_PORT,
     .parent        = TYPE_VIRTIO_SERIAL_PORT,
     .instance_size = sizeof(VirtConsole),
     .class_init    = virtserialport_class_init,
@@ -200,8 +193,8 @@ static const TypeInfo virtserialport_info = {
 
 static void virtconsole_register_types(void)
 {
-    type_register_static(&virtconsole_info);
     type_register_static(&virtserialport_info);
+    type_register_static(&virtconsole_info);
 }
 
 type_init(virtconsole_register_types)

hw/char/virtio-serial-bus.c

@@ -808,13 +808,14 @@ static void remove_port(VirtIOSerial *vser, uint32_t port_id)
     send_control_event(vser, port->id, VIRTIO_CONSOLE_PORT_REMOVE, 1);
 }
 
-static int virtser_port_qdev_init(DeviceState *qdev)
+static void virtser_port_device_realize(DeviceState *dev, Error **errp)
 {
-    VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, qdev);
+    VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(dev);
     VirtIOSerialPortClass *vsc = VIRTIO_SERIAL_PORT_GET_CLASS(port);
-    VirtIOSerialBus *bus = DO_UPCAST(VirtIOSerialBus, qbus, qdev->parent_bus);
-    int ret, max_nr_ports;
+    VirtIOSerialBus *bus = VIRTIO_SERIAL_BUS(qdev_get_parent_bus(dev));
+    int max_nr_ports;
     bool plugging_port0;
+    Error *err = NULL;
 
     port->vser = bus->vser;
     port->bh = qemu_bh_new(flush_queued_data_bh, port);
@@ -829,9 +830,9 @@ static int virtser_port_qdev_init(DeviceState *qdev)
     plugging_port0 = vsc->is_console && !find_port_by_id(port->vser, 0);
 
     if (find_port_by_id(port->vser, port->id)) {
-        error_report("virtio-serial-bus: A port already exists at id %u",
-                     port->id);
-        return -1;
+        error_setg(errp, "virtio-serial-bus: A port already exists at id %u",
+                   port->id);
+        return;
     }
 
     if (port->id == VIRTIO_CONSOLE_BAD_ID) {
@@ -840,22 +841,24 @@ static int virtser_port_qdev_init(DeviceState *qdev)
         } else {
             port->id = find_free_port_id(port->vser);
             if (port->id == VIRTIO_CONSOLE_BAD_ID) {
-                error_report("virtio-serial-bus: Maximum port limit for this device reached");
-                return -1;
+                error_setg(errp, "virtio-serial-bus: Maximum port limit for "
+                                 "this device reached");
+                return;
             }
         }
     }
 
     max_nr_ports = tswap32(port->vser->config.max_nr_ports);
     if (port->id >= max_nr_ports) {
-        error_report("virtio-serial-bus: Out-of-range port id specified, max. allowed: %u",
-                     max_nr_ports - 1);
-        return -1;
+        error_setg(errp, "virtio-serial-bus: Out-of-range port id specified, "
+                         "max. allowed: %u", max_nr_ports - 1);
+        return;
     }
 
-    ret = vsc->init(port);
-    if (ret) {
-        return ret;
+    vsc->realize(dev, &err);
+    if (err != NULL) {
+        error_propagate(errp, err);
+        return;
     }
 
     port->elem.out_num = 0;
@@ -868,14 +871,12 @@ static int virtser_port_qdev_init(DeviceState *qdev)
 
     /* Send an update to the guest about this new port added */
     virtio_notify_config(VIRTIO_DEVICE(port->vser));
-
-    return ret;
 }
 
-static int virtser_port_qdev_exit(DeviceState *qdev)
+static void virtser_port_device_unrealize(DeviceState *dev, Error **errp)
 {
-    VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, qdev);
-    VirtIOSerialPortClass *vsc = VIRTIO_SERIAL_PORT_GET_CLASS(port);
+    VirtIOSerialPort *port = VIRTIO_SERIAL_PORT(dev);
+    VirtIOSerialPortClass *vsc = VIRTIO_SERIAL_PORT_GET_CLASS(dev);
     VirtIOSerial *vser = port->vser;
 
     qemu_bh_delete(port->bh);
@@ -883,10 +884,9 @@ static int virtser_port_qdev_exit(DeviceState *qdev)
 
     QTAILQ_REMOVE(&vser->ports, port, next);
 
-    if (vsc->exit) {
-        vsc->exit(port);
+    if (vsc->unrealize) {
+        vsc->unrealize(dev, errp);
     }
-    return 0;
 }
 
 static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
@@ -971,10 +971,11 @@ static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
 static void virtio_serial_port_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *k = DEVICE_CLASS(klass);
-    k->init = virtser_port_qdev_init;
+
     set_bit(DEVICE_CATEGORY_INPUT, k->categories);
     k->bus_type = TYPE_VIRTIO_SERIAL_BUS;
-    k->exit = virtser_port_qdev_exit;
+    k->realize = virtser_port_device_realize;
+    k->unrealize = virtser_port_device_unrealize;
     k->unplug = qdev_simple_unplug_cb;
     k->props = virtser_props;
 }

hw/core/Makefile.objs

@@ -1,5 +1,6 @@
 # core qdev-related obj files, also used by *-user:
 common-obj-y += qdev.o qdev-properties.o
+common-obj-y += fw-path-provider.o
 # irq.o needed for qdev GPIO handling:
 common-obj-y += irq.o
 common-obj-y += hotplug.o
@@ -8,7 +9,7 @@ common-obj-$(CONFIG_EMPTY_SLOT) += empty_slot.o
 common-obj-$(CONFIG_XILINX_AXI) += stream.o
 common-obj-$(CONFIG_PTIMER) += ptimer.o
 common-obj-$(CONFIG_SOFTMMU) += sysbus.o
+common-obj-$(CONFIG_SOFTMMU) += machine.o
 common-obj-$(CONFIG_SOFTMMU) += null-machine.o
 common-obj-$(CONFIG_SOFTMMU) += loader.o
 common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
-

hw/core/fw-path-provider.c

@@ -0,0 +1,51 @@
+/*
+ *  Firmware patch provider class and helpers.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; under version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw/fw-path-provider.h"
+
+char *fw_path_provider_get_dev_path(FWPathProvider *p, BusState *bus,
+                                    DeviceState *dev)
+{
+    FWPathProviderClass *k = FW_PATH_PROVIDER_GET_CLASS(p);
+
+    return k->get_dev_path(p, bus, dev);
+}
+
+char *fw_path_provider_try_get_dev_path(Object *o, BusState *bus,
+                                        DeviceState *dev)
+{
+    FWPathProvider *p = (FWPathProvider *)
+        object_dynamic_cast(o, TYPE_FW_PATH_PROVIDER);
+
+    if (p) {
+        return fw_path_provider_get_dev_path(p, bus, dev);
+    }
+
+    return NULL;
+}
+
+static const TypeInfo fw_path_provider_info = {
+    .name          = TYPE_FW_PATH_PROVIDER,
+    .parent        = TYPE_INTERFACE,
+    .class_size    = sizeof(FWPathProviderClass),
+};
+
+static void fw_path_provider_register_types(void)
+{
+    type_register_static(&fw_path_provider_info);
+}
+
+type_init(fw_path_provider_register_types)

hw/core/loader.c

@@ -54,7 +54,8 @@
 
 #include <zlib.h>
 
-bool rom_file_in_ram = true;
+bool option_rom_has_mr = false;
+bool rom_file_has_mr = true;
 
 static int roms_loaded;
 
@@ -284,12 +285,30 @@ static void *load_at(int fd, int offset, int size)
 #define SZ		64
 #include "hw/elf_ops.h"
 
+const char *load_elf_strerror(int error)
+{
+    switch (error) {
+    case 0:
+        return "No error";
+    case ELF_LOAD_FAILED:
+        return "Failed to load ELF";
+    case ELF_LOAD_NOT_ELF:
+        return "The image is not ELF";
+    case ELF_LOAD_WRONG_ARCH:
+        return "The image is from incompatible architecture";
+    case ELF_LOAD_WRONG_ENDIAN:
+        return "The image has incorrect endianness";
+    default:
+        return "Unknown error";
+    }
+}
+
 /* return < 0 if error, otherwise the number of bytes loaded in memory */
 int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
              void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
              uint64_t *highaddr, int big_endian, int elf_machine, int clear_lsb)
 {
-    int fd, data_order, target_data_order, must_swab, ret;
+    int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED;
     uint8_t e_ident[EI_NIDENT];
 
     fd = open(filename, O_RDONLY | O_BINARY);
@@ -302,8 +321,10 @@ int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
     if (e_ident[0] != ELFMAG0 ||
         e_ident[1] != ELFMAG1 ||
         e_ident[2] != ELFMAG2 ||
-        e_ident[3] != ELFMAG3)
+        e_ident[3] != ELFMAG3) {
+        ret = ELF_LOAD_NOT_ELF;
         goto fail;
+    }
 #ifdef HOST_WORDS_BIGENDIAN
     data_order = ELFDATA2MSB;
 #else
@@ -317,6 +338,7 @@ int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
     }
 
     if (target_data_order != e_ident[EI_DATA]) {
+        ret = ELF_LOAD_WRONG_ENDIAN;
         goto fail;
     }
 
@@ -329,12 +351,9 @@ int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
                          pentry, lowaddr, highaddr, elf_machine, clear_lsb);
     }
 
-    close(fd);
-    return ret;
-
  fail:
     close(fd);
-    return -1;
+    return ret;
 }
 
 static void bswap_uboot_header(uboot_image_header_t *hdr)
@@ -624,7 +643,8 @@ static void *rom_set_mr(Rom *rom, Object *owner, const char *name)
 }
 
 int rom_add_file(const char *file, const char *fw_dir,
-                 hwaddr addr, int32_t bootindex)
+                 hwaddr addr, int32_t bootindex,
+                 bool option_rom)
 {
     Rom *rom;
     int rc, fd = -1;
@@ -676,7 +696,7 @@ int rom_add_file(const char *file, const char *fw_dir,
                  basename);
         snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
 
-        if (rom_file_in_ram) {
+        if ((!option_rom || option_rom_has_mr) && rom_file_has_mr) {
             data = rom_set_mr(rom, OBJECT(fw_cfg), devpath);
         } else {
             data = rom->data;
@@ -720,7 +740,7 @@ void *rom_add_blob(const char *name, const void *blob, size_t len,
 
         snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
 
-        if (rom_file_in_ram) {
+        if (rom_file_has_mr) {
             data = rom_set_mr(rom, OBJECT(fw_cfg), devpath);
         } else {
             data = rom->data;
@@ -755,12 +775,12 @@ int rom_add_elf_program(const char *name, void *data, size_t datasize,
 
 int rom_add_vga(const char *file)
 {
-    return rom_add_file(file, "vgaroms", 0, -1);
+    return rom_add_file(file, "vgaroms", 0, -1, true);
 }
 
 int rom_add_option(const char *file, int32_t bootindex)
 {
-    return rom_add_file(file, "genroms", 0, bootindex);
+    return rom_add_file(file, "genroms", 0, bootindex, true);
 }
 
 static void rom_reset(void *unused)

hw/core/machine.c

@@ -0,0 +1,28 @@
+/*
+ * QEMU Machine
+ *
+ * Copyright (C) 2014 Red Hat Inc
+ *
+ * Authors:
+ *   Marcel Apfelbaum <marcel.a@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "hw/boards.h"
+
+static const TypeInfo machine_info = {
+    .name = TYPE_MACHINE,
+    .parent = TYPE_OBJECT,
+    .abstract = true,
+    .class_size = sizeof(MachineClass),
+    .instance_size = sizeof(MachineState),
+};
+
+static void machine_register_types(void)
+{
+    type_register_static(&machine_info);
+}
+
+type_init(machine_register_types)

hw/core/qdev-properties-system.c

@@ -18,17 +18,19 @@
 #include "net/hub.h"
 #include "qapi/visitor.h"
 #include "sysemu/char.h"
+#include "sysemu/iothread.h"
 
 static void get_pointer(Object *obj, Visitor *v, Property *prop,
-                        const char *(*print)(void *ptr),
+                        char *(*print)(void *ptr),
                         const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     void **ptr = qdev_get_prop_ptr(dev, prop);
     char *p;
 
-    p = (char *) (*ptr ? print(*ptr) : "");
+    p = *ptr ? print(*ptr) : g_strdup("");
     visit_type_str(v, &p, name, errp);
+    g_free(p);
 }
 
 static void set_pointer(Object *obj, Visitor *v, Property *prop,
@@ -91,9 +93,9 @@ static void release_drive(Object *obj, const char *name, void *opaque)
     }
 }
 
-static const char *print_drive(void *ptr)
+static char *print_drive(void *ptr)
 {
-    return bdrv_get_device_name(ptr);
+    return g_strdup(bdrv_get_device_name(ptr));
 }
 
 static void get_drive(Object *obj, Visitor *v, void *opaque,
@@ -145,11 +147,12 @@ static void release_chr(Object *obj, const char *name, void *opaque)
 }
 
 
-static const char *print_chr(void *ptr)
+static char *print_chr(void *ptr)
 {
     CharDriverState *chr = ptr;
+    const char *val = chr->label ? chr->label : "";
 
-    return chr->label ? chr->label : "";
+    return g_strdup(val);
 }
 
 static void get_chr(Object *obj, Visitor *v, void *opaque,
@@ -224,11 +227,12 @@ err:
     return ret;
 }
 
-static const char *print_netdev(void *ptr)
+static char *print_netdev(void *ptr)
 {
     NetClientState *netdev = ptr;
+    const char *val = netdev->name ? netdev->name : "";
 
-    return netdev->name ? netdev->name : "";
+    return g_strdup(val);
 }
 
 static void get_netdev(Object *obj, Visitor *v, void *opaque,
@@ -382,6 +386,56 @@ void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
     nd->instantiated = 1;
 }
 
+/* --- iothread --- */
+
+static char *print_iothread(void *ptr)
+{
+    return iothread_get_id(ptr);
+}
+
+static int parse_iothread(DeviceState *dev, const char *str, void **ptr)
+{
+    IOThread *iothread;
+
+    iothread = iothread_find(str);
+    if (!iothread) {
+        return -ENOENT;
+    }
+    object_ref(OBJECT(iothread));
+    *ptr = iothread;
+    return 0;
+}
+
+static void get_iothread(Object *obj, struct Visitor *v, void *opaque,
+                         const char *name, Error **errp)
+{
+    get_pointer(obj, v, opaque, print_iothread, name, errp);
+}
+
+static void set_iothread(Object *obj, struct Visitor *v, void *opaque,
+                         const char *name, Error **errp)
+{
+    set_pointer(obj, v, opaque, parse_iothread, name, errp);
+}
+
+static void release_iothread(Object *obj, const char *name, void *opaque)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    IOThread **ptr = qdev_get_prop_ptr(dev, prop);
+
+    if (*ptr) {
+        object_unref(OBJECT(*ptr));
+    }
+}
+
+PropertyInfo qdev_prop_iothread = {
+    .name = "iothread",
+    .get = get_iothread,
+    .set = set_iothread,
+    .release = release_iothread,
+};
+
 static int qdev_add_one_global(QemuOpts *opts, void *opaque)
 {
     GlobalProperty *g;

hw/core/qdev-properties.c

@@ -21,6 +21,18 @@ void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
     }
 }
 
+void qdev_prop_allow_set_link_before_realize(Object *obj, const char *name,
+                                             Object *val, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+
+    if (dev->realized) {
+        error_setg(errp, "Attempt to set link property '%s' on device '%s' "
+                   "(type '%s') after it was realized",
+                   name, dev->id, object_get_typename(obj));
+    }
+}
+
 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
 {
     void *ptr = dev;

hw/core/qdev.c

@@ -26,6 +26,7 @@
    this API directly.  */
 
 #include "hw/qdev.h"
+#include "hw/fw-path-provider.h"
 #include "sysemu/sysemu.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
@@ -98,6 +99,8 @@ static void bus_add_child(BusState *bus, DeviceState *child)
     object_property_add_link(OBJECT(bus), name,
                              object_get_typename(OBJECT(child)),
                              (Object **)&kid->child,
+                             NULL, /* read-only property */
+                             0, /* return ownership on prop deletion */
                              NULL);
 }
 
@@ -440,27 +443,33 @@ DeviceState *qdev_find_recursive(BusState *bus, const char *id)
 static void qbus_realize(BusState *bus, DeviceState *parent, const char *name)
 {
     const char *typename = object_get_typename(OBJECT(bus));
+    BusClass *bc;
     char *buf;
-    int i,len;
+    int i, len, bus_id;
 
     bus->parent = parent;
 
     if (name) {
         bus->name = g_strdup(name);
     } else if (bus->parent && bus->parent->id) {
-        /* parent device has id -> use it for bus name */
+        /* parent device has id -> use it plus parent-bus-id for bus name */
+        bus_id = bus->parent->num_child_bus;
+
         len = strlen(bus->parent->id) + 16;
         buf = g_malloc(len);
-        snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus);
+        snprintf(buf, len, "%s.%d", bus->parent->id, bus_id);
         bus->name = buf;
     } else {
-        /* no id -> use lowercase bus type for bus name */
+        /* no id -> use lowercase bus type plus global bus-id for bus name */
+        bc = BUS_GET_CLASS(bus);
+        bus_id = bc->automatic_ids++;
+
         len = strlen(typename) + 16;
         buf = g_malloc(len);
-        len = snprintf(buf, len, "%s.%d", typename,
-                       bus->parent ? bus->parent->num_child_bus : 0);
-        for (i = 0; i < len; i++)
+        len = snprintf(buf, len, "%s.%d", typename, bus_id);
+        for (i = 0; i < len; i++) {
             buf[i] = qemu_tolower(buf[i]);
+        }
         bus->name = buf;
     }
 
@@ -495,6 +504,45 @@ static void bus_unparent(Object *obj)
     }
 }
 
+static bool bus_get_realized(Object *obj, Error **err)
+{
+    BusState *bus = BUS(obj);
+
+    return bus->realized;
+}
+
+static void bus_set_realized(Object *obj, bool value, Error **err)
+{
+    BusState *bus = BUS(obj);
+    BusClass *bc = BUS_GET_CLASS(bus);
+    Error *local_err = NULL;
+
+    if (value && !bus->realized) {
+        if (bc->realize) {
+            bc->realize(bus, &local_err);
+
+            if (local_err != NULL) {
+                goto error;
+            }
+
+        }
+    } else if (!value && bus->realized) {
+        if (bc->unrealize) {
+            bc->unrealize(bus, &local_err);
+
+            if (local_err != NULL) {
+                goto error;
+            }
+        }
+    }
+
+    bus->realized = value;
+    return;
+
+error:
+    error_propagate(err, local_err);
+}
+
 void qbus_create_inplace(void *bus, size_t size, const char *typename,
                          DeviceState *parent, const char *name)
 {
@@ -523,6 +571,18 @@ static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev)
     return NULL;
 }
 
+static char *qdev_get_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
+{
+    Object *obj = OBJECT(dev);
+    char *d = NULL;
+
+    while (!d && obj->parent) {
+        obj = obj->parent;
+        d = fw_path_provider_try_get_dev_path(obj, bus, dev);
+    }
+    return d;
+}
+
 static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size)
 {
     int l = 0;
@@ -530,7 +590,10 @@ static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size)
     if (dev && dev->parent_bus) {
         char *d;
         l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size);
-        d = bus_get_fw_dev_path(dev->parent_bus, dev);
+        d = qdev_get_fw_dev_path_from_handler(dev->parent_bus, dev);
+        if (!d) {
+            d = bus_get_fw_dev_path(dev->parent_bus, dev);
+        }
         if (d) {
             l += snprintf(p + l, size - l, "%s", d);
             g_free(d);
@@ -671,6 +734,7 @@ static void device_set_realized(Object *obj, bool value, Error **err)
 {
     DeviceState *dev = DEVICE(obj);
     DeviceClass *dc = DEVICE_GET_CLASS(dev);
+    BusState *bus;
     Error *local_err = NULL;
 
     if (dev->hotplugged && !dc->hotpluggable) {
@@ -704,14 +768,30 @@ static void device_set_realized(Object *obj, bool value, Error **err)
                                            dev->instance_id_alias,
                                            dev->alias_required_for_version);
         }
+        if (local_err == NULL) {
+            QLIST_FOREACH(bus, &dev->child_bus, sibling) {
+                object_property_set_bool(OBJECT(bus), true, "realized",
+                                         &local_err);
+                if (local_err != NULL) {
+                    break;
+                }
+            }
+        }
         if (dev->hotplugged && local_err == NULL) {
             device_reset(dev);
         }
     } else if (!value && dev->realized) {
-        if (qdev_get_vmsd(dev)) {
+        QLIST_FOREACH(bus, &dev->child_bus, sibling) {
+            object_property_set_bool(OBJECT(bus), false, "realized",
+                                     &local_err);
+            if (local_err != NULL) {
+                break;
+            }
+        }
+        if (qdev_get_vmsd(dev) && local_err == NULL) {
             vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
         }
-        if (dc->unrealize) {
+        if (dc->unrealize && local_err == NULL) {
             dc->unrealize(dev, &local_err);
         }
     }
@@ -729,7 +809,8 @@ static bool device_get_hotpluggable(Object *obj, Error **err)
     DeviceClass *dc = DEVICE_GET_CLASS(obj);
     DeviceState *dev = DEVICE(obj);
 
-    return dc->hotpluggable && dev->parent_bus->allow_hotplug;
+    return dc->hotpluggable && (dev->parent_bus == NULL ||
+                                dev->parent_bus->allow_hotplug);
 }
 
 static void device_initfn(Object *obj)
@@ -761,7 +842,8 @@ static void device_initfn(Object *obj)
     } while (class != object_class_by_name(TYPE_DEVICE));
 
     object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS,
-                             (Object **)&dev->parent_bus, &error_abort);
+                             (Object **)&dev->parent_bus, NULL, 0,
+                             &error_abort);
 }
 
 static void device_post_init(Object *obj)
@@ -786,14 +868,6 @@ static void device_class_base_init(ObjectClass *class, void *data)
      * so do not propagate them to the subclasses.
      */
     klass->props = NULL;
-
-    /* by default all devices were considered as hotpluggable,
-     * so with intent to check it in generic qdev_unplug() /
-     * device_set_realized() functions make every device
-     * hotpluggable. Devices that shouldn't be hotpluggable,
-     * should override it in their class_init()
-     */
-    klass->hotpluggable = true;
 }
 
 static void device_unparent(Object *obj)
@@ -803,13 +877,13 @@ static void device_unparent(Object *obj)
     QObject *event_data;
     bool have_realized = dev->realized;
 
+    if (dev->realized) {
+        object_property_set_bool(obj, false, "realized", NULL);
+    }
     while (dev->num_child_bus) {
         bus = QLIST_FIRST(&dev->child_bus);
         object_unparent(OBJECT(bus));
     }
-    if (dev->realized) {
-        object_property_set_bool(obj, false, "realized", NULL);
-    }
     if (dev->parent_bus) {
         bus_remove_child(dev->parent_bus, dev);
         object_unref(OBJECT(dev->parent_bus));
@@ -839,6 +913,14 @@ static void device_class_init(ObjectClass *class, void *data)
     class->unparent = device_unparent;
     dc->realize = device_realize;
     dc->unrealize = device_unrealize;
+
+    /* by default all devices were considered as hotpluggable,
+     * so with intent to check it in generic qdev_unplug() /
+     * device_set_realized() functions make every device
+     * hotpluggable. Devices that shouldn't be hotpluggable,
+     * should override it in their class_init()
+     */
+    dc->hotpluggable = true;
 }
 
 void device_reset(DeviceState *dev)
@@ -881,7 +963,12 @@ static void qbus_initfn(Object *obj)
     QTAILQ_INIT(&bus->children);
     object_property_add_link(obj, QDEV_HOTPLUG_HANDLER_PROPERTY,
                              TYPE_HOTPLUG_HANDLER,
-                             (Object **)&bus->hotplug_handler, NULL);
+                             (Object **)&bus->hotplug_handler,
+                             object_property_allow_set_link,
+                             OBJ_PROP_LINK_UNREF_ON_RELEASE,
+                             NULL);
+    object_property_add_bool(obj, "realized",
+                             bus_get_realized, bus_set_realized, NULL);
 }
 
 static char *default_bus_get_fw_dev_path(DeviceState *dev)

hw/display/ads7846.c

@@ -133,11 +133,12 @@ static const VMStateDescription vmstate_ads7846 = {
     }
 };
 
-static int ads7846_init(SSISlave *dev)
+static int ads7846_init(SSISlave *d)
 {
-    ADS7846State *s = FROM_SSI_SLAVE(ADS7846State, dev);
+    DeviceState *dev = DEVICE(d);
+    ADS7846State *s = FROM_SSI_SLAVE(ADS7846State, d);
 
-    qdev_init_gpio_out(&dev->qdev, &s->interrupt, 1);
+    qdev_init_gpio_out(dev, &s->interrupt, 1);
 
     s->input[0] = ADS_TEMP0;	/* TEMP0 */
     s->input[2] = ADS_VBAT;	/* VBAT */

hw/display/ssd0323.c

@@ -336,18 +336,19 @@ static const GraphicHwOps ssd0323_ops = {
     .gfx_update  = ssd0323_update_display,
 };
 
-static int ssd0323_init(SSISlave *dev)
+static int ssd0323_init(SSISlave *d)
 {
-    ssd0323_state *s = FROM_SSI_SLAVE(ssd0323_state, dev);
+    DeviceState *dev = DEVICE(d);
+    ssd0323_state *s = FROM_SSI_SLAVE(ssd0323_state, d);
 
     s->col_end = 63;
     s->row_end = 79;
-    s->con = graphic_console_init(DEVICE(dev), 0, &ssd0323_ops, s);
+    s->con = graphic_console_init(dev, 0, &ssd0323_ops, s);
     qemu_console_resize(s->con, 128 * MAGNIFY, 64 * MAGNIFY);
 
-    qdev_init_gpio_in(&dev->qdev, ssd0323_cd, 1);
+    qdev_init_gpio_in(dev, ssd0323_cd, 1);
 
-    register_savevm(&dev->qdev, "ssd0323_oled", -1, 1,
+    register_savevm(dev, "ssd0323_oled", -1, 1,
                     ssd0323_save, ssd0323_load, s);
     return 0;
 }

hw/display/vmware_vga.c

@@ -25,6 +25,7 @@
 #include "hw/loader.h"
 #include "trace.h"
 #include "ui/console.h"
+#include "ui/vnc.h"
 #include "hw/pci/pci.h"
 
 #undef VERBOSE
@@ -218,7 +219,7 @@ enum {
 
 /* These values can probably be changed arbitrarily.  */
 #define SVGA_SCRATCH_SIZE               0x8000
-#define SVGA_MAX_WIDTH                  2360
+#define SVGA_MAX_WIDTH                  ROUND_UP(2360, VNC_DIRTY_PIXELS_PER_BIT)
 #define SVGA_MAX_HEIGHT                 1770
 
 #ifdef VERBOSE

hw/display/xenfb.c

@@ -992,7 +992,7 @@ wait_more:
 
     /* vfb */
     fb = container_of(xfb, struct XenFB, c.xendev);
-    fb->c.con = graphic_console_init(NULL, &xenfb_ops, fb);
+    fb->c.con = graphic_console_init(NULL, 0, &xenfb_ops, fb);
     fb->have_console = 1;
 
     /* vkbd */

hw/dma/xilinx_axidma.c

@@ -537,9 +537,15 @@ static void xilinx_axidma_realize(DeviceState *dev, Error **errp)
     Error *local_errp = NULL;
 
     object_property_add_link(OBJECT(ds), "dma", TYPE_XILINX_AXI_DMA,
-                             (Object **)&ds->dma, &local_errp);
+                             (Object **)&ds->dma,
+                             object_property_allow_set_link,
+                             OBJ_PROP_LINK_UNREF_ON_RELEASE,
+                             &local_errp);
     object_property_add_link(OBJECT(cs), "dma", TYPE_XILINX_AXI_DMA,
-                             (Object **)&cs->dma, &local_errp);
+                             (Object **)&cs->dma,
+                             object_property_allow_set_link,
+                             OBJ_PROP_LINK_UNREF_ON_RELEASE,
+                             &local_errp);
     if (local_errp) {
         goto xilinx_axidma_realize_fail;
     }
@@ -571,10 +577,16 @@ static void xilinx_axidma_init(Object *obj)
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 
     object_property_add_link(obj, "axistream-connected", TYPE_STREAM_SLAVE,
-                             (Object **)&s->tx_data_dev, &error_abort);
+                             (Object **)&s->tx_data_dev,
+                             qdev_prop_allow_set_link_before_realize,
+                             OBJ_PROP_LINK_UNREF_ON_RELEASE,
+                             &error_abort);
     object_property_add_link(obj, "axistream-control-connected",
                              TYPE_STREAM_SLAVE,
-                             (Object **)&s->tx_control_dev, &error_abort);
+                             (Object **)&s->tx_control_dev,
+                             qdev_prop_allow_set_link_before_realize,
+                             OBJ_PROP_LINK_UNREF_ON_RELEASE,
+                             &error_abort);
 
     object_initialize(&s->rx_data_dev, sizeof(s->rx_data_dev),
                       TYPE_XILINX_AXI_DMA_DATA_STREAM);

hw/i386/acpi-build.c

@@ -52,7 +52,7 @@
 #include "qom/qom-qobject.h"
 
 typedef struct AcpiCpuInfo {
-    DECLARE_BITMAP(found_cpus, MAX_CPUMASK_BITS + 1);
+    DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT);
 } AcpiCpuInfo;
 
 typedef struct AcpiMcfgInfo {
@@ -117,7 +117,7 @@ int acpi_add_cpu_info(Object *o, void *opaque)
 
     if (object_dynamic_cast(o, TYPE_CPU)) {
         apic_id = object_property_get_int(o, "apic-id", NULL);
-        assert(apic_id <= MAX_CPUMASK_BITS);
+        assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT);
 
         set_bit(apic_id, cpu->found_cpus);
     }
@@ -226,14 +226,14 @@ static void acpi_get_pci_info(PcPciInfo *info)
 
 static void
 build_header(GArray *linker, GArray *table_data,
-             AcpiTableHeader *h, uint32_t sig, int len, uint8_t rev)
+             AcpiTableHeader *h, const char *sig, int len, uint8_t rev)
 {
-    h->signature = cpu_to_le32(sig);
+    memcpy(&h->signature, sig, 4);
     h->length = cpu_to_le32(len);
     h->revision = rev;
     memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6);
     memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4);
-    memcpy(h->oem_table_id + 4, (void *)&sig, 4);
+    memcpy(h->oem_table_id + 4, sig, 4);
     h->oem_revision = cpu_to_le32(1);
     memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4);
     h->asl_compiler_revision = cpu_to_le32(1);
@@ -466,9 +466,15 @@ static void acpi_align_size(GArray *blob, unsigned align)
     g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
 }
 
-/* Get pointer within table in a safe manner */
-#define ACPI_BUILD_PTR(table, size, off, type) \
-    ((type *)(acpi_data_get_ptr(table, size, off, sizeof(type))))
+/* Set a value within table in a safe manner */
+#define ACPI_BUILD_SET_LE(table, size, off, bits, val) \
+    do { \
+        uint64_t ACPI_BUILD_SET_LE_val = cpu_to_le64(val); \
+        memcpy(acpi_data_get_ptr(table, size, off, \
+                                 (bits) / BITS_PER_BYTE), \
+               &ACPI_BUILD_SET_LE_val, \
+               (bits) / BITS_PER_BYTE); \
+    } while (0)
 
 static inline void *acpi_data_get_ptr(uint8_t *table_data, unsigned table_size,
                                       unsigned off, unsigned size)
@@ -489,7 +495,7 @@ static void
 build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info)
 {
     AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
-    facs->signature = cpu_to_le32(ACPI_FACS_SIGNATURE);
+    memcpy(&facs->signature, "FACS", 4);
     facs->length = cpu_to_le32(sizeof(*facs));
 }
 
@@ -546,7 +552,7 @@ build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
     fadt_setup(fadt, pm);
 
     build_header(linker, table_data,
-                 (void *)fadt, ACPI_FACP_SIGNATURE, sizeof(*fadt), 1);
+                 (void *)fadt, "FACP", sizeof(*fadt), 1);
 }
 
 static void
@@ -615,7 +621,7 @@ build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu,
     local_nmi->lint         = 1; /* ACPI_LINT1 */
 
     build_header(linker, table_data,
-                 (void *)(table_data->data + madt_start), ACPI_APIC_SIGNATURE,
+                 (void *)(table_data->data + madt_start), "APIC",
                  table_data->len - madt_start, 1);
 }
 
@@ -643,6 +649,21 @@ static inline char acpi_get_hex(uint32_t val)
 #define ACPI_PCIHP_SIZEOF (*ssdt_pcihp_end - *ssdt_pcihp_start)
 #define ACPI_PCIHP_AML (ssdp_pcihp_aml + *ssdt_pcihp_start)
 
+#define ACPI_PCINOHP_OFFSET_HEX (*ssdt_pcinohp_name - *ssdt_pcinohp_start + 1)
+#define ACPI_PCINOHP_OFFSET_ADR (*ssdt_pcinohp_adr - *ssdt_pcinohp_start)
+#define ACPI_PCINOHP_SIZEOF (*ssdt_pcinohp_end - *ssdt_pcinohp_start)
+#define ACPI_PCINOHP_AML (ssdp_pcihp_aml + *ssdt_pcinohp_start)
+
+#define ACPI_PCIVGA_OFFSET_HEX (*ssdt_pcivga_name - *ssdt_pcivga_start + 1)
+#define ACPI_PCIVGA_OFFSET_ADR (*ssdt_pcivga_adr - *ssdt_pcivga_start)
+#define ACPI_PCIVGA_SIZEOF (*ssdt_pcivga_end - *ssdt_pcivga_start)
+#define ACPI_PCIVGA_AML (ssdp_pcihp_aml + *ssdt_pcivga_start)
+
+#define ACPI_PCIQXL_OFFSET_HEX (*ssdt_pciqxl_name - *ssdt_pciqxl_start + 1)
+#define ACPI_PCIQXL_OFFSET_ADR (*ssdt_pciqxl_adr - *ssdt_pciqxl_start)
+#define ACPI_PCIQXL_SIZEOF (*ssdt_pciqxl_end - *ssdt_pciqxl_start)
+#define ACPI_PCIQXL_AML (ssdp_pcihp_aml + *ssdt_pciqxl_start)
+
 #define ACPI_SSDT_SIGNATURE 0x54445353 /* SSDT */
 #define ACPI_SSDT_HEADER_LENGTH 36
 
@@ -677,6 +698,33 @@ static void patch_pcihp(int slot, uint8_t *ssdt_ptr)
     ssdt_ptr[ACPI_PCIHP_OFFSET_ADR + 2] = slot;
 }
 
+static void patch_pcinohp(int slot, uint8_t *ssdt_ptr)
+{
+    unsigned devfn = PCI_DEVFN(slot, 0);
+
+    ssdt_ptr[ACPI_PCINOHP_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
+    ssdt_ptr[ACPI_PCINOHP_OFFSET_HEX + 1] = acpi_get_hex(devfn);
+    ssdt_ptr[ACPI_PCINOHP_OFFSET_ADR + 2] = slot;
+}
+
+static void patch_pcivga(int slot, uint8_t *ssdt_ptr)
+{
+    unsigned devfn = PCI_DEVFN(slot, 0);
+
+    ssdt_ptr[ACPI_PCIVGA_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
+    ssdt_ptr[ACPI_PCIVGA_OFFSET_HEX + 1] = acpi_get_hex(devfn);
+    ssdt_ptr[ACPI_PCIVGA_OFFSET_ADR + 2] = slot;
+}
+
+static void patch_pciqxl(int slot, uint8_t *ssdt_ptr)
+{
+    unsigned devfn = PCI_DEVFN(slot, 0);
+
+    ssdt_ptr[ACPI_PCIQXL_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
+    ssdt_ptr[ACPI_PCIQXL_OFFSET_HEX + 1] = acpi_get_hex(devfn);
+    ssdt_ptr[ACPI_PCIQXL_OFFSET_ADR + 2] = slot;
+}
+
 /* Assign BSEL property to all buses.  In the future, this can be changed
  * to only assign to buses that support hotplug.
  */
@@ -737,6 +785,10 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
     AcpiBuildPciBusHotplugState *parent = child->parent;
     GArray *bus_table = build_alloc_array();
     DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
+    DECLARE_BITMAP(slot_device_present, PCI_SLOT_MAX);
+    DECLARE_BITMAP(slot_device_system, PCI_SLOT_MAX);
+    DECLARE_BITMAP(slot_device_vga, PCI_SLOT_MAX);
+    DECLARE_BITMAP(slot_device_qxl, PCI_SLOT_MAX);
     uint8_t op;
     int i;
     QObject *bsel;
@@ -764,40 +816,82 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
         build_append_byte(bus_table, 0x08); /* NameOp */
         build_append_nameseg(bus_table, "BSEL");
         build_append_int(bus_table, qint_get_int(qobject_to_qint(bsel)));
-
         memset(slot_hotplug_enable, 0xff, sizeof slot_hotplug_enable);
+    } else {
+        /* No bsel - no slots are hot-pluggable */
+        memset(slot_hotplug_enable, 0x00, sizeof slot_hotplug_enable);
+    }
 
-        for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
-            DeviceClass *dc;
-            PCIDeviceClass *pc;
-            PCIDevice *pdev = bus->devices[i];
+    memset(slot_device_present, 0x00, sizeof slot_device_present);
+    memset(slot_device_system, 0x00, sizeof slot_device_present);
+    memset(slot_device_vga, 0x00, sizeof slot_device_vga);
+    memset(slot_device_qxl, 0x00, sizeof slot_device_qxl);
 
-            if (!pdev) {
-                continue;
-            }
+    for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
+        DeviceClass *dc;
+        PCIDeviceClass *pc;
+        PCIDevice *pdev = bus->devices[i];
+        int slot = PCI_SLOT(i);
 
-            pc = PCI_DEVICE_GET_CLASS(pdev);
-            dc = DEVICE_GET_CLASS(pdev);
+        if (!pdev) {
+            continue;
+        }
 
-            if (!dc->hotpluggable || pc->is_bridge) {
-                int slot = PCI_SLOT(i);
+        set_bit(slot, slot_device_present);
+        pc = PCI_DEVICE_GET_CLASS(pdev);
+        dc = DEVICE_GET_CLASS(pdev);
 
-                clear_bit(slot, slot_hotplug_enable);
+        if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
+            set_bit(slot, slot_device_system);
+        }
+
+        if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
+            set_bit(slot, slot_device_vga);
+
+            if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
+                set_bit(slot, slot_device_qxl);
             }
         }
 
-        /* Append Device object for each slot which supports eject */
-        for (i = 0; i < PCI_SLOT_MAX; i++) {
-            bool can_eject = test_bit(i, slot_hotplug_enable);
-            if (can_eject) {
-                void *pcihp = acpi_data_push(bus_table,
-                                             ACPI_PCIHP_SIZEOF);
-                memcpy(pcihp, ACPI_PCIHP_AML, ACPI_PCIHP_SIZEOF);
-                patch_pcihp(i, pcihp);
-                bus_hotplug_support = true;
-            }
+        if (!dc->hotpluggable || pc->is_bridge) {
+            clear_bit(slot, slot_hotplug_enable);
         }
+    }
 
+    /* Append Device object for each slot */
+    for (i = 0; i < PCI_SLOT_MAX; i++) {
+        bool can_eject = test_bit(i, slot_hotplug_enable);
+        bool present = test_bit(i, slot_device_present);
+        bool vga = test_bit(i, slot_device_vga);
+        bool qxl = test_bit(i, slot_device_qxl);
+        bool system = test_bit(i, slot_device_system);
+        if (can_eject) {
+            void *pcihp = acpi_data_push(bus_table,
+                                         ACPI_PCIHP_SIZEOF);
+            memcpy(pcihp, ACPI_PCIHP_AML, ACPI_PCIHP_SIZEOF);
+            patch_pcihp(i, pcihp);
+            bus_hotplug_support = true;
+        } else if (qxl) {
+            void *pcihp = acpi_data_push(bus_table,
+                                         ACPI_PCIQXL_SIZEOF);
+            memcpy(pcihp, ACPI_PCIQXL_AML, ACPI_PCIQXL_SIZEOF);
+            patch_pciqxl(i, pcihp);
+        } else if (vga) {
+            void *pcihp = acpi_data_push(bus_table,
+                                         ACPI_PCIVGA_SIZEOF);
+            memcpy(pcihp, ACPI_PCIVGA_AML, ACPI_PCIVGA_SIZEOF);
+            patch_pcivga(i, pcihp);
+        } else if (system) {
+            /* Nothing to do: system devices are in DSDT. */
+        } else if (present) {
+            void *pcihp = acpi_data_push(bus_table,
+                                         ACPI_PCINOHP_SIZEOF);
+            memcpy(pcihp, ACPI_PCINOHP_AML, ACPI_PCINOHP_SIZEOF);
+            patch_pcinohp(i, pcihp);
+        }
+    }
+
+    if (bsel) {
         method = build_alloc_method("DVNT", 2);
 
         for (i = 0; i < PCI_SLOT_MAX; i++) {
@@ -886,22 +980,17 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
 
 static void patch_pci_windows(PcPciInfo *pci, uint8_t *start, unsigned size)
 {
-    *ACPI_BUILD_PTR(start, size, acpi_pci32_start[0], uint32_t) =
-        cpu_to_le32(pci->w32.begin);
+    ACPI_BUILD_SET_LE(start, size, acpi_pci32_start[0], 32, pci->w32.begin);
 
-    *ACPI_BUILD_PTR(start, size, acpi_pci32_end[0], uint32_t) =
-        cpu_to_le32(pci->w32.end - 1);
+    ACPI_BUILD_SET_LE(start, size, acpi_pci32_end[0], 32, pci->w32.end - 1);
 
     if (pci->w64.end || pci->w64.begin) {
-        *ACPI_BUILD_PTR(start, size, acpi_pci64_valid[0], uint8_t) = 1;
-        *ACPI_BUILD_PTR(start, size, acpi_pci64_start[0], uint64_t) =
-            cpu_to_le64(pci->w64.begin);
-        *ACPI_BUILD_PTR(start, size, acpi_pci64_end[0], uint64_t) =
-            cpu_to_le64(pci->w64.end - 1);
-        *ACPI_BUILD_PTR(start, size, acpi_pci64_length[0], uint64_t) =
-            cpu_to_le64(pci->w64.end - pci->w64.begin);
+        ACPI_BUILD_SET_LE(start, size, acpi_pci64_valid[0], 8, 1);
+        ACPI_BUILD_SET_LE(start, size, acpi_pci64_start[0], 64, pci->w64.begin);
+        ACPI_BUILD_SET_LE(start, size, acpi_pci64_end[0], 64, pci->w64.end - 1);
+        ACPI_BUILD_SET_LE(start, size, acpi_pci64_length[0], 64, pci->w64.end - pci->w64.begin);
     } else {
-        *ACPI_BUILD_PTR(start, size, acpi_pci64_valid[0], uint8_t) = 0;
+        ACPI_BUILD_SET_LE(start, size, acpi_pci64_valid[0], 8, 0);
     }
 }
 
@@ -910,11 +999,16 @@ build_ssdt(GArray *table_data, GArray *linker,
            AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc,
            PcPciInfo *pci, PcGuestInfo *guest_info)
 {
-    int acpi_cpus = MIN(0xff, guest_info->apic_id_limit);
+    unsigned acpi_cpus = guest_info->apic_id_limit;
     int ssdt_start = table_data->len;
     uint8_t *ssdt_ptr;
     int i;
 
+    /* The current AML generator can cover the APIC ID range [0..255],
+     * inclusive, for VCPU hotplug. */
+    QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
+    g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
+
     /* Copy header and patch values in the S3_ / S4_ / S5_ packages */
     ssdt_ptr = acpi_data_push(table_data, sizeof(ssdp_misc_aml));
     memcpy(ssdt_ptr, ssdp_misc_aml, sizeof(ssdp_misc_aml));
@@ -930,8 +1024,8 @@ build_ssdt(GArray *table_data, GArray *linker,
 
     patch_pci_windows(pci, ssdt_ptr, sizeof(ssdp_misc_aml));
 
-    *(uint16_t *)(ssdt_ptr + *ssdt_isa_pest) =
-        cpu_to_le16(misc->pvpanic_port);
+    ACPI_BUILD_SET_LE(ssdt_ptr, sizeof(ssdp_misc_aml),
+                      ssdt_isa_pest[0], 16, misc->pvpanic_port);
 
     {
         GArray *sb_scope = build_alloc_array();
@@ -961,9 +1055,9 @@ build_ssdt(GArray *table_data, GArray *linker,
 
         {
             GArray *package = build_alloc_array();
-            uint8_t op = 0x12; /* PackageOp */
+            uint8_t op = 0x13; /* VarPackageOp */
 
-            build_append_byte(package, acpi_cpus); /* NumElements */
+            build_append_int(package, acpi_cpus); /* VarNumElements */
             for (i = 0; i < acpi_cpus; i++) {
                 uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
                 build_append_byte(package, b);
@@ -976,7 +1070,14 @@ build_ssdt(GArray *table_data, GArray *linker,
 
         {
             AcpiBuildPciBusHotplugState hotplug_state;
-            PCIBus *bus = find_i440fx(); /* TODO: Q35 support */
+            Object *pci_host;
+            PCIBus *bus = NULL;
+            bool ambiguous;
+
+            pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
+            if (!ambiguous && pci_host) {
+                bus = PCI_HOST_BRIDGE(pci_host)->bus;
+            }
 
             build_pci_bus_state_init(&hotplug_state, NULL);
 
@@ -997,7 +1098,7 @@ build_ssdt(GArray *table_data, GArray *linker,
 
     build_header(linker, table_data,
                  (void *)(table_data->data + ssdt_start),
-                 ACPI_SSDT_SIGNATURE, table_data->len - ssdt_start, 1);
+                 "SSDT", table_data->len - ssdt_start, 1);
 }
 
 static void
@@ -1012,7 +1113,7 @@ build_hpet(GArray *table_data, GArray *linker)
     hpet->timer_block_id = cpu_to_le32(0x8086a201);
     hpet->addr.address = cpu_to_le64(HPET_BASE);
     build_header(linker, table_data,
-                 (void *)hpet, ACPI_HPET_SIGNATURE, sizeof(*hpet), 1);
+                 (void *)hpet, "HPET", sizeof(*hpet), 1);
 }
 
 static void
@@ -1104,7 +1205,7 @@ build_srat(GArray *table_data, GArray *linker,
 
     build_header(linker, table_data,
                  (void *)(table_data->data + srat_start),
-                 ACPI_SRAT_SIGNATURE,
+                 "SRAT",
                  table_data->len - srat_start, 1);
 }
 
@@ -1112,7 +1213,7 @@ static void
 build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
 {
     AcpiTableMcfg *mcfg;
-    uint32_t sig;
+    const char *sig;
     int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
 
     mcfg = acpi_data_push(table_data, len);
@@ -1129,9 +1230,10 @@ build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
      * ACPI spec requires OSPMs to ignore such tables.
      */
     if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) {
-        sig = ACPI_RSRV_SIGNATURE;
+        /* Reserved signature: ignored by OSPM */
+        sig = "QEMU";
     } else {
-        sig = ACPI_MCFG_SIGNATURE;
+        sig = "MCFG";
     }
     build_header(linker, table_data, (void *)mcfg, sig, len, 1);
 }
@@ -1147,7 +1249,7 @@ build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc)
     memcpy(dsdt, misc->dsdt_code, misc->dsdt_size);
 
     memset(dsdt, 0, sizeof *dsdt);
-    build_header(linker, table_data, dsdt, ACPI_DSDT_SIGNATURE,
+    build_header(linker, table_data, dsdt, "DSDT",
                  misc->dsdt_size, 1);
 }
 
@@ -1172,7 +1274,7 @@ build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets)
                                        sizeof(uint32_t));
     }
     build_header(linker, table_data,
-                 (void *)rsdt, ACPI_RSDT_SIGNATURE, rsdt_len, 1);
+                 (void *)rsdt, "RSDT", rsdt_len, 1);
 }
 
 static GArray *
@@ -1183,7 +1285,7 @@ build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
     bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 1,
                              true /* fseg memory */);
 
-    rsdp->signature = cpu_to_le64(ACPI_RSDP_SIGNATURE);
+    memcpy(&rsdp->signature, "RSD PTR ", 8);
     memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
     rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
     /* Address to be filled by Guest linker */

hw/i386/acpi-defs.h

@@ -52,8 +52,6 @@ struct Acpi20GenericAddress {
 } QEMU_PACKED;
 typedef struct Acpi20GenericAddress Acpi20GenericAddress;
 
-#define ACPI_RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR "
-
 struct AcpiRsdpDescriptor {        /* Root System Descriptor Pointer */
     uint64_t signature;              /* ACPI signature, contains "RSD PTR " */
     uint8_t  checksum;               /* To make sum of struct == 0 */
@@ -92,7 +90,6 @@ typedef struct AcpiTableHeader AcpiTableHeader;
 /*
  * ACPI 1.0 Fixed ACPI Description Table (FADT)
  */
-#define ACPI_FACP_SIGNATURE 0x50434146 // FACP
 struct AcpiFadtDescriptorRev1
 {
     ACPI_TABLE_HEADER_DEF     /* ACPI common table header */
@@ -141,7 +138,6 @@ typedef struct AcpiFadtDescriptorRev1 AcpiFadtDescriptorRev1;
 /*
  * ACPI 1.0 Root System Description Table (RSDT)
  */
-#define ACPI_RSDT_SIGNATURE 0x54445352 // RSDT
 struct AcpiRsdtDescriptorRev1
 {
     ACPI_TABLE_HEADER_DEF       /* ACPI common table header */
@@ -153,7 +149,6 @@ typedef struct AcpiRsdtDescriptorRev1 AcpiRsdtDescriptorRev1;
 /*
  * ACPI 1.0 Firmware ACPI Control Structure (FACS)
  */
-#define ACPI_FACS_SIGNATURE 0x53434146 // FACS
 struct AcpiFacsDescriptorRev1
 {
     uint32_t signature;           /* ACPI Signature */
@@ -169,7 +164,6 @@ typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1;
 /*
  * Differentiated System Description Table (DSDT)
  */
-#define ACPI_DSDT_SIGNATURE 0x54445344 // DSDT
 
 /*
  * MADT values and structures
@@ -182,7 +176,6 @@ typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1;
 
 /* Master MADT */
 
-#define ACPI_APIC_SIGNATURE 0x43495041 // APIC
 struct AcpiMultipleApicTable
 {
     ACPI_TABLE_HEADER_DEF     /* ACPI common table header */
@@ -253,7 +246,6 @@ typedef struct AcpiMadtLocalNmi AcpiMadtLocalNmi;
 /*
  * HPET Description Table
  */
-#define ACPI_HPET_SIGNATURE 0x54455048 // HPET
 struct Acpi20Hpet {
     ACPI_TABLE_HEADER_DEF                    /* ACPI common table header */
     uint32_t           timer_block_id;
@@ -268,7 +260,6 @@ typedef struct Acpi20Hpet Acpi20Hpet;
  * SRAT (NUMA topology description) table
  */
 
-#define ACPI_SRAT_SIGNATURE 0x54415253 // SRAT
 struct AcpiSystemResourceAffinityTable
 {
     ACPI_TABLE_HEADER_DEF
@@ -316,11 +307,6 @@ struct AcpiMcfgAllocation {
 } QEMU_PACKED;
 typedef struct AcpiMcfgAllocation AcpiMcfgAllocation;
 
-#define ACPI_MCFG_SIGNATURE 0x4746434d       // MCFG
-
-/* Reserved signature: ignored by OSPM */
-#define ACPI_RSRV_SIGNATURE 0x554d4551       // QEMU
-
 struct AcpiTableMcfg {
     ACPI_TABLE_HEADER_DEF;
     uint8_t reserved[8];

hw/i386/acpi-dsdt.dsl

@@ -80,6 +80,8 @@ DefinitionBlock (
             Name(_HID, EisaId("PNP0A03"))
             Name(_ADR, 0x00)
             Name(_UID, 1)
+//#define PX13 S0B_
+//            External(PX13, DeviceObj)
         }
     }
 
@@ -87,34 +89,6 @@ DefinitionBlock (
 #include "acpi-dsdt-hpet.dsl"
 
 
-/****************************************************************
- * VGA
- ****************************************************************/
-
-    Scope(\_SB.PCI0) {
-        Device(VGA) {
-            Name(_ADR, 0x00020000)
-            OperationRegion(PCIC, PCI_Config, Zero, 0x4)
-            Field(PCIC, DWordAcc, NoLock, Preserve) {
-                VEND, 32
-            }
-            Method(_S1D, 0, NotSerialized) {
-                Return (0x00)
-            }
-            Method(_S2D, 0, NotSerialized) {
-                Return (0x00)
-            }
-            Method(_S3D, 0, NotSerialized) {
-                If (LEqual(VEND, 0x1001b36)) {
-                    Return (0x03)           // QXL
-                } Else {
-                    Return (0x00)
-                }
-            }
-        }
-    }
-
-
 /****************************************************************
  * PIIX4 PM
  ****************************************************************/
@@ -132,6 +106,9 @@ DefinitionBlock (
  ****************************************************************/
 
     Scope(\_SB.PCI0) {
+
+        External(ISA, DeviceObj)
+
         Device(ISA) {
             Name(_ADR, 0x00010000)
 

hw/i386/acpi-dsdt.hex.generated

@@ -3,12 +3,12 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x53,
 0x44,
 0x54,
-0x87,
+0x85,
 0x11,
 0x0,
 0x0,
 0x1,
-0xb8,
+0x8b,
 0x42,
 0x58,
 0x50,
@@ -146,7 +146,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x1,
 0x10,
 0x4e,
-0x15,
+0x18,
 0x2e,
 0x5f,
 0x53,
@@ -163,9 +163,9 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x53,
 0x11,
 0x42,
-0x7,
 0xa,
-0x6e,
+0xa,
+0x9e,
 0x88,
 0xd,
 0x0,
@@ -217,11 +217,59 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x0,
 0xd,
 0xff,
+0xad,
+0x0,
+0x0,
+0x0,
+0xa1,
+0x88,
+0xd,
+0x0,
+0x1,
+0xc,
+0x3,
+0x0,
+0x0,
+0xf,
+0xae,
+0xff,
+0xae,
+0x0,
+0x0,
+0xf1,
+0x0,
+0x88,
+0xd,
+0x0,
+0x1,
+0xc,
+0x3,
+0x0,
+0x0,
+0x20,
+0xaf,
+0xdf,
+0xaf,
+0x0,
+0x0,
+0xc0,
+0x0,
+0x88,
+0xd,
+0x0,
+0x1,
+0xc,
+0x3,
+0x0,
+0x0,
+0xe4,
+0xaf,
+0xff,
 0xff,
 0x0,
 0x0,
-0x0,
-0xf3,
+0x1c,
+0x50,
 0x87,
 0x17,
 0x0,
@@ -347,7 +395,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x45,
 0x53,
 0xa,
-0x5c,
+0x8c,
 0x50,
 0x53,
 0x33,
@@ -358,7 +406,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x45,
 0x53,
 0xa,
-0x60,
+0x90,
 0x50,
 0x45,
 0x33,
@@ -369,7 +417,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x45,
 0x53,
 0xa,
-0x68,
+0x98,
 0x50,
 0x4c,
 0x33,
@@ -638,103 +686,6 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x79,
 0x0,
 0x10,
-0x40,
-0x6,
-0x2e,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x50,
-0x43,
-0x49,
-0x30,
-0x5b,
-0x82,
-0x43,
-0x5,
-0x56,
-0x47,
-0x41,
-0x5f,
-0x8,
-0x5f,
-0x41,
-0x44,
-0x52,
-0xc,
-0x0,
-0x0,
-0x2,
-0x0,
-0x5b,
-0x80,
-0x50,
-0x43,
-0x49,
-0x43,
-0x2,
-0x0,
-0xa,
-0x4,
-0x5b,
-0x81,
-0xb,
-0x50,
-0x43,
-0x49,
-0x43,
-0x3,
-0x56,
-0x45,
-0x4e,
-0x44,
-0x20,
-0x14,
-0x8,
-0x5f,
-0x53,
-0x31,
-0x44,
-0x0,
-0xa4,
-0x0,
-0x14,
-0x8,
-0x5f,
-0x53,
-0x32,
-0x44,
-0x0,
-0xa4,
-0x0,
-0x14,
-0x19,
-0x5f,
-0x53,
-0x33,
-0x44,
-0x0,
-0xa0,
-0xe,
-0x93,
-0x56,
-0x45,
-0x4e,
-0x44,
-0xc,
-0x36,
-0x1b,
-0x0,
-0x1,
-0xa4,
-0xa,
-0x3,
-0xa1,
-0x3,
-0xa4,
-0x0,
-0x10,
 0x25,
 0x2e,
 0x5f,
@@ -860,7 +811,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x4e,
 0x1,
 0x10,
-0x4b,
+0x4a,
 0x1e,
 0x2f,
 0x3,
@@ -878,7 +829,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x5f,
 0x5b,
 0x82,
-0x2d,
+0x2c,
 0x53,
 0x4d,
 0x43,
@@ -898,9 +849,8 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x53,
 0x54,
 0x41,
-0xb,
-0x0,
-0xff,
+0xa,
+0xf0,
 0x8,
 0x5f,
 0x43,
@@ -4061,7 +4011,7 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x1,
 0x10,
 0x47,
-0xe,
+0x11,
 0x5f,
 0x53,
 0x42,
@@ -4291,6 +4241,54 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x3,
 0x75,
 0x60,
+0x5b,
+0x82,
+0x2e,
+0x50,
+0x52,
+0x45,
+0x53,
+0x8,
+0x5f,
+0x48,
+0x49,
+0x44,
+0xd,
+0x41,
+0x43,
+0x50,
+0x49,
+0x30,
+0x30,
+0x30,
+0x34,
+0x0,
+0x8,
+0x5f,
+0x43,
+0x52,
+0x53,
+0x11,
+0xd,
+0xa,
+0xa,
+0x47,
+0x1,
+0x0,
+0xaf,
+0x0,
+0xaf,
+0x0,
+0x20,
+0x79,
+0x0,
+0x8,
+0x5f,
+0x53,
+0x54,
+0x41,
+0xa,
+0xb,
 0x10,
 0x42,
 0xc,
@@ -4488,5 +4486,5 @@ static unsigned char AcpiDsdtAmlCode[] = {
 0x0
 };
 static unsigned short piix_dsdt_applesmc_sta[] = {
-0x384
+0x353
 };

hw/i386/kvmvapic.c

@@ -406,7 +406,7 @@ static void patch_instruction(VAPICROMState *s, X86CPU *cpu, target_ulong ip)
     }
 
     if (!kvm_enabled()) {
-        cpu_restore_state(env, env->mem_io_pc);
+        cpu_restore_state(cs, cs->mem_io_pc);
         cpu_get_tb_cpu_state(env, &current_pc, &current_cs_base,
                              &current_flags);
     }
@@ -448,8 +448,8 @@ static void patch_instruction(VAPICROMState *s, X86CPU *cpu, target_ulong ip)
 
     if (!kvm_enabled()) {
         cs->current_tb = NULL;
-        tb_gen_code(env, current_pc, current_cs_base, current_flags, 1);
-        cpu_resume_from_signal(env, NULL);
+        tb_gen_code(cs, current_pc, current_cs_base, current_flags, 1);
+        cpu_resume_from_signal(cs, NULL);
     }
 }
 

hw/i386/pc.c

@@ -53,6 +53,7 @@
 #include "qemu/bitmap.h"
 #include "qemu/config-file.h"
 #include "hw/acpi/acpi.h"
+#include "hw/acpi/cpu_hotplug.h"
 #include "hw/cpu/icc_bus.h"
 #include "hw/boards.h"
 #include "hw/pci/pci_host.h"
@@ -974,6 +975,13 @@ void pc_hot_add_cpu(const int64_t id, Error **errp)
         return;
     }
 
+    if (apic_id >= ACPI_CPU_HOTPLUG_ID_LIMIT) {
+        error_setg(errp, "Unable to add CPU: %" PRIi64
+                   ", resulting APIC ID (%" PRIi64 ") is too large",
+                   id, apic_id);
+        return;
+    }
+
     icc_bridge = DEVICE(object_resolve_path_type("icc-bridge",
                                                  TYPE_ICC_BRIDGE, NULL));
     pc_new_cpu(current_cpu_model, apic_id, icc_bridge, errp);
@@ -984,6 +992,7 @@ void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge)
     int i;
     X86CPU *cpu = NULL;
     Error *error = NULL;
+    unsigned long apic_id_limit;
 
     /* init CPUs */
     if (cpu_model == NULL) {
@@ -995,6 +1004,13 @@ void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge)
     }
     current_cpu_model = cpu_model;
 
+    apic_id_limit = pc_apic_id_limit(max_cpus);
+    if (apic_id_limit > ACPI_CPU_HOTPLUG_ID_LIMIT) {
+        error_report("max_cpus is too large. APIC ID of last CPU is %lu",
+                     apic_id_limit - 1);
+        exit(1);
+    }
+
     for (i = 0; i < smp_cpus; i++) {
         cpu = pc_new_cpu(cpu_model, x86_cpu_apic_id_from_index(i),
                          icc_bridge, &error);

hw/i386/pc_piix.c

@@ -221,10 +221,16 @@ static void pc_init1(QEMUMachineInitArgs *args,
     } else {
         for(i = 0; i < MAX_IDE_BUS; i++) {
             ISADevice *dev;
+            char busname[] = "ide.0";
             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
                                ide_irq[i],
                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
-            idebus[i] = qdev_get_child_bus(DEVICE(dev), "ide.0");
+            /*
+             * The ide bus name is ide.0 for the first bus and ide.1 for the
+             * second one.
+             */
+            busname[4] = '0' + i;
+            idebus[i] = qdev_get_child_bus(DEVICE(dev), busname);
         }
     }
 
@@ -260,13 +266,15 @@ static void pc_compat_1_7(QEMUMachineInitArgs *args)
 {
     smbios_type1_defaults = false;
     gigabyte_align = false;
+    option_rom_has_mr = true;
+    x86_cpu_compat_disable_kvm_features(FEAT_1_ECX, CPUID_EXT_X2APIC);
 }
 
 static void pc_compat_1_6(QEMUMachineInitArgs *args)
 {
     pc_compat_1_7(args);
     has_pci_info = false;
-    rom_file_in_ram = false;
+    rom_file_has_mr = false;
     has_acpi_build = false;
 }
 
@@ -292,7 +300,7 @@ static void pc_compat_1_3(QEMUMachineInitArgs *args)
 static void pc_compat_1_2(QEMUMachineInitArgs *args)
 {
     pc_compat_1_3(args);
-    disable_kvm_pv_eoi();
+    x86_cpu_compat_disable_kvm_features(FEAT_KVM, KVM_FEATURE_PV_EOI);
 }
 
 static void pc_init_pci_1_7(QEMUMachineInitArgs *args)
@@ -338,7 +346,7 @@ static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args)
     has_pci_info = false;
     has_acpi_build = false;
     smbios_type1_defaults = false;
-    disable_kvm_pv_eoi();
+    x86_cpu_compat_disable_kvm_features(FEAT_KVM, KVM_FEATURE_PV_EOI);
     enable_compat_apic_id_mode();
     pc_init1(args, 1, 0);
 }
@@ -351,7 +359,7 @@ static void pc_init_isa(QEMUMachineInitArgs *args)
     if (!args->cpu_model) {
         args->cpu_model = "486";
     }
-    disable_kvm_pv_eoi();
+    x86_cpu_compat_disable_kvm_features(FEAT_KVM, KVM_FEATURE_PV_EOI);
     enable_compat_apic_id_mode();
     pc_init1(args, 0, 1);
 }

hw/i386/pc_q35.c

@@ -244,13 +244,15 @@ static void pc_compat_1_7(QEMUMachineInitArgs *args)
 {
     smbios_type1_defaults = false;
     gigabyte_align = false;
+    option_rom_has_mr = true;
+    x86_cpu_compat_disable_kvm_features(FEAT_1_ECX, CPUID_EXT_X2APIC);
 }
 
 static void pc_compat_1_6(QEMUMachineInitArgs *args)
 {
     pc_compat_1_7(args);
     has_pci_info = false;
-    rom_file_in_ram = false;
+    rom_file_has_mr = false;
     has_acpi_build = false;
 }
 

hw/i386/q35-acpi-dsdt.dsl

@@ -72,6 +72,8 @@ DefinitionBlock (
             Name(_ADR, 0x00)
             Name(_UID, 1)
 
+            External(ISA, DeviceObj)
+
             // _OSC: based on sample of ACPI3.0b spec
             Name(SUPP, 0) // PCI _OSC Support Field value
             Name(CTRL, 0) // PCI _OSC Control Field value
@@ -133,26 +135,6 @@ DefinitionBlock (
 #include "acpi-dsdt-hpet.dsl"
 
 
-/****************************************************************
- * VGA
- ****************************************************************/
-
-    Scope(\_SB.PCI0) {
-        Device(VGA) {
-            Name(_ADR, 0x00010000)
-            Method(_S1D, 0, NotSerialized) {
-                Return (0x00)
-            }
-            Method(_S2D, 0, NotSerialized) {
-                Return (0x00)
-            }
-            Method(_S3D, 0, NotSerialized) {
-                Return (0x00)
-            }
-        }
-    }
-
-
 /****************************************************************
  * LPC ISA bridge
  ****************************************************************/
@@ -160,8 +142,7 @@ DefinitionBlock (
     Scope(\_SB.PCI0) {
         /* PCI D31:f0 LPC ISA bridge */
         Device(ISA) {
-            /* PCI D31:f0 */
-            Name(_ADR, 0x001f0000)
+            Name (_ADR, 0x001F0000)  // _ADR: Address
 
             /* ICH9 PCI to ISA irq remapping */
             OperationRegion(PIRQ, PCI_Config, 0x60, 0x0C)

hw/i386/q35-acpi-dsdt.hex.generated

@@ -3,12 +3,12 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x53,
 0x44,
 0x54,
-0xdf,
+0xd7,
 0x1c,
 0x0,
 0x0,
 0x1,
-0xff,
+0x3e,
 0x42,
 0x58,
 0x50,
@@ -415,11 +415,11 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x0,
 0x0,
 0x0,
-0xf7,
+0xd7,
 0xc,
 0x0,
 0x0,
-0xf8,
+0xd8,
 0xc,
 0x88,
 0xd,
@@ -853,61 +853,6 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x79,
 0x0,
 0x10,
-0x36,
-0x2e,
-0x5f,
-0x53,
-0x42,
-0x5f,
-0x50,
-0x43,
-0x49,
-0x30,
-0x5b,
-0x82,
-0x2a,
-0x56,
-0x47,
-0x41,
-0x5f,
-0x8,
-0x5f,
-0x41,
-0x44,
-0x52,
-0xc,
-0x0,
-0x0,
-0x1,
-0x0,
-0x14,
-0x8,
-0x5f,
-0x53,
-0x31,
-0x44,
-0x0,
-0xa4,
-0x0,
-0x14,
-0x8,
-0x5f,
-0x53,
-0x32,
-0x44,
-0x0,
-0xa4,
-0x0,
-0x14,
-0x8,
-0x5f,
-0x53,
-0x33,
-0x44,
-0x0,
-0xa4,
-0x0,
-0x10,
 0x4c,
 0x7,
 0x2e,
@@ -1033,7 +978,7 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x4e,
 0x1,
 0x10,
-0x4b,
+0x4a,
 0x1e,
 0x2f,
 0x3,
@@ -1051,7 +996,7 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x5f,
 0x5b,
 0x82,
-0x2d,
+0x2c,
 0x53,
 0x4d,
 0x43,
@@ -1071,9 +1016,8 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x53,
 0x54,
 0x41,
-0xb,
-0x0,
-0xff,
+0xa,
+0xf0,
 0x8,
 0x5f,
 0x43,
@@ -7016,7 +6960,7 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x1,
 0x10,
 0x47,
-0xe,
+0x11,
 0x5f,
 0x53,
 0x42,
@@ -7121,8 +7065,8 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x54,
 0x1,
 0xb,
-0x0,
-0xaf,
+0xd8,
+0xc,
 0xa,
 0x20,
 0x5b,
@@ -7246,6 +7190,54 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x3,
 0x75,
 0x60,
+0x5b,
+0x82,
+0x2e,
+0x50,
+0x52,
+0x45,
+0x53,
+0x8,
+0x5f,
+0x48,
+0x49,
+0x44,
+0xd,
+0x41,
+0x43,
+0x50,
+0x49,
+0x30,
+0x30,
+0x30,
+0x34,
+0x0,
+0x8,
+0x5f,
+0x43,
+0x52,
+0x53,
+0x11,
+0xd,
+0xa,
+0xa,
+0x47,
+0x1,
+0xd8,
+0xc,
+0xd8,
+0xc,
+0x0,
+0x20,
+0x79,
+0x0,
+0x8,
+0x5f,
+0x53,
+0x54,
+0x41,
+0xa,
+0xb,
 0x10,
 0x4f,
 0x8,
@@ -7392,5 +7384,5 @@ static unsigned char Q35AcpiDsdtAmlCode[] = {
 0x0
 };
 static unsigned short q35_dsdt_applesmc_sta[] = {
-0x431
+0x3fa
 };

hw/i386/ssdt-pcihp.dsl

@@ -46,5 +46,55 @@ DefinitionBlock ("ssdt-pcihp.aml", "SSDT", 0x01, "BXPC", "BXSSDTPCIHP", 0x1)
             }
         }
 
+        ACPI_EXTRACT_DEVICE_START ssdt_pcinohp_start
+        ACPI_EXTRACT_DEVICE_END ssdt_pcinohp_end
+        ACPI_EXTRACT_DEVICE_STRING ssdt_pcinohp_name
+
+        // Extract the offsets of the device name, address dword and the slot
+        // name byte - we fill them in for each device.
+        Device(SBB) {
+            ACPI_EXTRACT_NAME_DWORD_CONST ssdt_pcinohp_adr
+            Name(_ADR, 0xAA0000)
+        }
+
+        ACPI_EXTRACT_DEVICE_START ssdt_pcivga_start
+        ACPI_EXTRACT_DEVICE_END ssdt_pcivga_end
+        ACPI_EXTRACT_DEVICE_STRING ssdt_pcivga_name
+
+        // Extract the offsets of the device name, address dword and the slot
+        // name byte - we fill them in for each device.
+        Device(SCC) {
+            ACPI_EXTRACT_NAME_DWORD_CONST ssdt_pcivga_adr
+            Name(_ADR, 0xAA0000)
+            Method(_S1D, 0, NotSerialized) {
+                Return (0x00)
+            }
+            Method(_S2D, 0, NotSerialized) {
+                Return (0x00)
+            }
+            Method(_S3D, 0, NotSerialized) {
+                Return (0x00)
+            }
+        }
+
+        ACPI_EXTRACT_DEVICE_START ssdt_pciqxl_start
+        ACPI_EXTRACT_DEVICE_END ssdt_pciqxl_end
+        ACPI_EXTRACT_DEVICE_STRING ssdt_pciqxl_name
+
+        // Extract the offsets of the device name, address dword and the slot
+        // name byte - we fill them in for each device.
+        Device(SDD) {
+            ACPI_EXTRACT_NAME_DWORD_CONST ssdt_pciqxl_adr
+            Name(_ADR, 0xAA0000)
+            Method(_S1D, 0, NotSerialized) {
+                Return (0x00)
+            }
+            Method(_S2D, 0, NotSerialized) {
+                Return (0x00)
+            }
+            Method(_S3D, 0, NotSerialized) {
+                Return (0x03)           // QXL
+            }
+        }
     }
 }

hw/i386/ssdt-pcihp.hex.generated

@@ -1,23 +1,38 @@
 static unsigned char ssdt_pcihp_name[] = {
-0x33
+0x34
+};
+static unsigned char ssdt_pcivga_end[] = {
+0x99
+};
+static unsigned char ssdt_pcivga_name[] = {
+0x70
 };
 static unsigned char ssdt_pcihp_adr[] = {
-0x44
+0x45
+};
+static unsigned char ssdt_pcinohp_end[] = {
+0x6d
 };
 static unsigned char ssdt_pcihp_end[] = {
-0x5b
+0x5c
+};
+static unsigned char ssdt_pciqxl_start[] = {
+0x99
+};
+static unsigned char ssdt_pcinohp_name[] = {
+0x5f
 };
 static unsigned char ssdp_pcihp_aml[] = {
 0x53,
 0x53,
 0x44,
 0x54,
-0x5b,
+0xc6,
 0x0,
 0x0,
 0x0,
 0x1,
-0xe8,
+0x6b,
 0x42,
 0x58,
 0x50,
@@ -45,7 +60,8 @@ static unsigned char ssdp_pcihp_aml[] = {
 0x13,
 0x20,
 0x10,
-0x36,
+0x41,
+0xa,
 0x5c,
 0x2e,
 0x5f,
@@ -98,11 +114,138 @@ static unsigned char ssdp_pcihp_aml[] = {
 0x5f,
 0x53,
 0x55,
-0x4e
+0x4e,
+0x5b,
+0x82,
+0xf,
+0x53,
+0x42,
+0x42,
+0x5f,
+0x8,
+0x5f,
+0x41,
+0x44,
+0x52,
+0xc,
+0x0,
+0x0,
+0xaa,
+0x0,
+0x5b,
+0x82,
+0x2a,
+0x53,
+0x43,
+0x43,
+0x5f,
+0x8,
+0x5f,
+0x41,
+0x44,
+0x52,
+0xc,
+0x0,
+0x0,
+0xaa,
+0x0,
+0x14,
+0x8,
+0x5f,
+0x53,
+0x31,
+0x44,
+0x0,
+0xa4,
+0x0,
+0x14,
+0x8,
+0x5f,
+0x53,
+0x32,
+0x44,
+0x0,
+0xa4,
+0x0,
+0x14,
+0x8,
+0x5f,
+0x53,
+0x33,
+0x44,
+0x0,
+0xa4,
+0x0,
+0x5b,
+0x82,
+0x2b,
+0x53,
+0x44,
+0x44,
+0x5f,
+0x8,
+0x5f,
+0x41,
+0x44,
+0x52,
+0xc,
+0x0,
+0x0,
+0xaa,
+0x0,
+0x14,
+0x8,
+0x5f,
+0x53,
+0x31,
+0x44,
+0x0,
+0xa4,
+0x0,
+0x14,
+0x8,
+0x5f,
+0x53,
+0x32,
+0x44,
+0x0,
+0xa4,
+0x0,
+0x14,
+0x9,
+0x5f,
+0x53,
+0x33,
+0x44,
+0x0,
+0xa4,
+0xa,
+0x3
+};
+static unsigned char ssdt_pciqxl_adr[] = {
+0xa6
+};
+static unsigned char ssdt_pcinohp_adr[] = {
+0x69
+};
+static unsigned char ssdt_pcivga_adr[] = {
+0x7a
+};
+static unsigned char ssdt_pciqxl_name[] = {
+0x9c
+};
+static unsigned char ssdt_pcivga_start[] = {
+0x6d
+};
+static unsigned char ssdt_pciqxl_end[] = {
+0xc6
 };
 static unsigned char ssdt_pcihp_start[] = {
-0x30
+0x31
 };
 static unsigned char ssdt_pcihp_id[] = {
-0x3d
+0x3e
+};
+static unsigned char ssdt_pcinohp_start[] = {
+0x5c
 };

hw/ide/ahci.c

@@ -118,11 +118,12 @@ static uint32_t  ahci_port_read(AHCIState *s, int port, int offset)
 static void ahci_irq_raise(AHCIState *s, AHCIDevice *dev)
 {
     AHCIPCIState *d = container_of(s, AHCIPCIState, ahci);
-    PCIDevice *pci_dev = PCI_DEVICE(d);
+    PCIDevice *pci_dev =
+        (PCIDevice *)object_dynamic_cast(OBJECT(d), TYPE_PCI_DEVICE);
 
     DPRINTF(0, "raise irq\n");
 
-    if (msi_enabled(pci_dev)) {
+    if (pci_dev && msi_enabled(pci_dev)) {
         msi_notify(pci_dev, 0);
     } else {
         qemu_irq_raise(s->irq);
@@ -132,10 +133,12 @@ static void ahci_irq_raise(AHCIState *s, AHCIDevice *dev)
 static void ahci_irq_lower(AHCIState *s, AHCIDevice *dev)
 {
     AHCIPCIState *d = container_of(s, AHCIPCIState, ahci);
+    PCIDevice *pci_dev =
+        (PCIDevice *)object_dynamic_cast(OBJECT(d), TYPE_PCI_DEVICE);
 
     DPRINTF(0, "lower irq\n");
 
-    if (!msi_enabled(PCI_DEVICE(d))) {
+    if (!pci_dev || !msi_enabled(pci_dev)) {
         qemu_irq_lower(s->irq);
     }
 }
@@ -1311,7 +1314,7 @@ static const VMStateDescription vmstate_sysbus_ahci = {
     .name = "sysbus-ahci",
     .unmigratable = 1, /* Still buggy under I/O load */
     .fields = (VMStateField []) {
-        VMSTATE_AHCI(ahci, AHCIPCIState),
+        VMSTATE_AHCI(ahci, SysbusAHCIState),
         VMSTATE_END_OF_LIST()
     },
 };
@@ -1328,7 +1331,7 @@ static void sysbus_ahci_realize(DeviceState *dev, Error **errp)
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
     SysbusAHCIState *s = SYSBUS_AHCI(dev);
 
-    ahci_init(&s->ahci, dev, NULL, s->num_ports);
+    ahci_init(&s->ahci, dev, &address_space_memory, s->num_ports);
 
     sysbus_init_mmio(sbd, &s->ahci.mem);
     sysbus_init_irq(sbd, &s->ahci.irq);

hw/ide/ahci.h

@@ -40,7 +40,7 @@
 #define AHCI_PORT_PRIV_DMA_SZ     (AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ + \
                                    AHCI_RX_FIS_SZ)
 
-#define AHCI_IRQ_ON_SG            (1 << 31)
+#define AHCI_IRQ_ON_SG            (1U << 31)
 #define AHCI_CMD_ATAPI            (1 << 5)
 #define AHCI_CMD_WRITE            (1 << 6)
 #define AHCI_CMD_PREFETCH         (1 << 7)
@@ -61,7 +61,7 @@
 /* HOST_CTL bits */
 #define HOST_CTL_RESET            (1 << 0)  /* reset controller; self-clear */
 #define HOST_CTL_IRQ_EN           (1 << 1)  /* global IRQ enable */
-#define HOST_CTL_AHCI_EN          (1 << 31) /* AHCI enabled */
+#define HOST_CTL_AHCI_EN          (1U << 31) /* AHCI enabled */
 
 /* HOST_CAP bits */
 #define HOST_CAP_SSC              (1 << 14) /* Slumber capable */
@@ -69,7 +69,7 @@
 #define HOST_CAP_CLO              (1 << 24) /* Command List Override support */
 #define HOST_CAP_SSS              (1 << 27) /* Staggered Spin-up */
 #define HOST_CAP_NCQ              (1 << 30) /* Native Command Queueing */
-#define HOST_CAP_64               (1 << 31) /* PCI DAC (64-bit DMA) support */
+#define HOST_CAP_64               (1U << 31) /* PCI DAC (64-bit DMA) support */
 
 /* registers for each SATA port */
 #define PORT_LST_ADDR             0x00 /* command list DMA addr */
@@ -89,7 +89,7 @@
 #define PORT_RESERVED             0x3c /* reserved */
 
 /* PORT_IRQ_{STAT,MASK} bits */
-#define PORT_IRQ_COLD_PRES        (1 << 31) /* cold presence detect */
+#define PORT_IRQ_COLD_PRES        (1U << 31) /* cold presence detect */
 #define PORT_IRQ_TF_ERR           (1 << 30) /* task file error */
 #define PORT_IRQ_HBUS_ERR         (1 << 29) /* host bus fatal error */
 #define PORT_IRQ_HBUS_DATA_ERR    (1 << 28) /* host bus data error */
@@ -151,7 +151,7 @@
 #define PORT_IRQ_STAT_HBDS        (1 << 28) /* Host Bus Data Error Status */
 #define PORT_IRQ_STAT_HBFS        (1 << 29) /* Host Bus Fatal Error Status */
 #define PORT_IRQ_STAT_TFES        (1 << 30) /* Task File Error Status */
-#define PORT_IRQ_STAT_CPDS        (1 << 31) /* Code Port Detect Status */
+#define PORT_IRQ_STAT_CPDS        (1U << 31) /* Code Port Detect Status */
 
 /* ap->flags bits */
 #define AHCI_FLAG_NO_NCQ                  (1 << 24)

hw/input/pckbd.c

@@ -281,7 +281,7 @@ static void kbd_write_command(void *opaque, hwaddr addr,
         kbd_update_irq(s);
         break;
     case KBD_CCMD_READ_INPORT:
-        kbd_queue(s, 0x00, 0);
+        kbd_queue(s, 0x80, 0);
         break;
     case KBD_CCMD_READ_OUTPORT:
         kbd_queue(s, s->outport, 0);

hw/intc/arm_gic_kvm.c

@@ -148,7 +148,7 @@ typedef void (*vgic_translate_fn)(GICState *s, int irq, int cpu,
                                   uint32_t *field, bool to_kernel);
 
 /* synthetic translate function used for clear/set registers to completely
- * clear a setting using a clear-register before setting the remaing bits
+ * clear a setting using a clear-register before setting the remaining bits
  * using a set-register */
 static void translate_clear(GICState *s, int irq, int cpu,
                             uint32_t *field, bool to_kernel)

hw/intc/ioapic.c

@@ -93,9 +93,6 @@ static void ioapic_set_irq(void *opaque, int vector, int level)
         uint32_t mask = 1 << vector;
         uint64_t entry = s->ioredtbl[vector];
 
-        if (entry & (1 << IOAPIC_LVT_POLARITY_SHIFT)) {
-            level = !level;
-        }
         if (((entry >> IOAPIC_LVT_TRIGGER_MODE_SHIFT) & 1) ==
             IOAPIC_TRIGGER_LEVEL) {
             /* level triggered */

hw/intc/openpic_kvm.c

@@ -228,7 +228,7 @@ int kvm_openpic_connect_vcpu(DeviceState *d, CPUState *cs)
 
     encap.cap = KVM_CAP_IRQ_MPIC;
     encap.args[0] = opp->fd;
-    encap.args[1] = cs->cpu_index;
+    encap.args[1] = kvm_arch_vcpu_id(cs);
 
     return kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &encap);
 }