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qemu/xen_disk-Add-suse-specific-flush-disable.patch
Dario Faggioli d58941a9c7 Accepting request 1006734 from home:dfaggioli:devel:Virtualization
- Runs of the test-suite seem much more stable now, in this version
  of QEMU. (bsc#1203610) We are also fine re-enabling running them
  in parallel.
- Switch QEMU Linux user to emulate the same CPU as the one of the
  host by default. This is a bit conrtoversial and tricky, when
  thinking about system emulation/virtualization. But for linux-user,
  it should be just fine. (bsc#1203684)
* Patches added:
  linux-user-use-max-as-default-CPU-model-.patch
- Be less verbose when packaging documentation. In fact, with just
  a couple of (minor) re-arrangements, we can get rid of having to
  list all the files all the time
- Package /etc/qemu/bridge.conf as '%config(noreplace). Next step
  will probably be to move it to /usr/etc/qemu (bsc#1201944)
- Switch to %autosetup for all products (this required some changes
  in update_git.sh)
- Run check-qtest sequentially, as it's more reliable, when in OBS
- Build with libbpf, fdt and capstone support
- Drop the patch adding our support document, and deal with that
  in the spec file directly
* Patches dropped:
  doc-add-our-support-doc-to-the-main-proj.patch
- Updated to latest upstream version 7.1
  * https://wiki.qemu.org/ChangeLog/7.1
  Be sure to also check the following pages:
  * https://qemu-project.gitlab.io/qemu/about/removed-features.html
  * https://qemu-project.gitlab.io/qemu/about/deprecated.html
  Some notable changes:
  * [x86] Support for architectural LBRs on KVM virtual machines
  * [x86] The libopcode-based disassembler has been removed. Use
          Capstone instead
  * [LoongArch] Add initial support for the LoongArch64 architecture.
  * [ARM] The emulated SMMUv3 now advertises support for SMMUv3.2-BBML2
  * [ARM] The xlnx-zynqmp SoC model now implements the 4 TTC timers
  * [ARM] The versal machine now models the Cortex-R5s in the Real-Time
          Processing Unit (RPU) subsystem
  * [ARM] The virt board now supports emulation of the GICv4.0
  * [ARM] New emulated CPU types: Cortex-A76, Neoverse-N1
  * [HPPA] Fix serial port pass-through from host to guest
  * [HPPA] Lots of general code improvements and tidy-ups
  * [RISC-V] RISC-V
  * [RISC-V] Add support for privileged spec version 1.12.0
  * [RISC-V] Use privileged spec version 1.12.0 for virt machine by default
  * [RISC-V] Allow software access to MIP SEIP
  * [RISC-V] Add initial support for the Sdtrig extension
  * [RISC-V] Optimisations and improvements for the vector extension
  * [VFIO] Experimental support for exposing emulated PCI devices over the
           new vfio-user protocol (a vfio-user client is not yet available
           in QEMU, though)
  * [QMP] The on-cbw-error option for copy-before-write filter, to specify
           behavior on CBW (copy before write) operation failure.
  * [QMP] The cbw-timeout option for copy-before-write filter, to specify
          timeout for CBW operation.
  * [QMP] New commands query-stats and query-stats-schema to retrieve
          statistics from various QEMU subsystems (right now only from
          KVM).
  * [QMP] The PanicAction can now be configured to report an exit-failure
          (useful for automated testing)
  * [Networking] QEMU can be compiled with the system slirp library even
                 when using CFI. This requires libslirp 4.7.
  * [Migration] Support for zero-copy-send on Linux, which reduces CPU
                usage on the source host. Note that locked memory is needed
                to support this
* Patches added:
  Revert-tests-qtest-enable-more-vhost-use.patch
  meson-remove-pkgversion-from-CONFIG_STAM.patch
* Patches dropped:
  AIO-Reduce-number-of-threads-for-32bit-h.patch
  Makefile-Don-t-check-pc-bios-as-pre-requ.patch
  Revert-8dcb404bff6d9147765d7dd3e9c849337.patch
  Revert-qht-constify-qht_statistics_init.patch
  XXX-dont-dump-core-on-sigabort.patch
  acpi_piix4-Fix-migration-from-SLE11-SP2.patch
  configure-only-populate-roms-if-softmmu.patch
  configure-remove-pkgversion-from-CONFIG_.patch
  coroutine-ucontext-use-QEMU_DEFINE_STATI.patch
  coroutine-use-QEMU_DEFINE_STATIC_CO_TLS.patch
  coroutine-win32-use-QEMU_DEFINE_STATIC_C.patch
  hostmem-default-the-amount-of-prealloc-t.patch
  hw-usb-hcd-ehci-fix-writeback-order.patch
  i8254-Fix-migration-from-SLE11-SP2.patch
  intc-exynos4210_gic-replace-snprintf-wit.patch
  modules-generates-per-target-modinfo.patch
  modules-introduces-module_kconfig-direct.patch
  pc-bios-s390-ccw-net-avoid-warning-about.patch
  pci-fix-overflow-in-snprintf-string-form.patch
  qemu-cvs-gettimeofday.patch
  qemu-cvs-ioctl_debug.patch
  qemu-cvs-ioctl_nodirection.patch
  qht-Revert-some-constification-in-qht.c.patch
  qom-handle-case-of-chardev-spice-module-.patch
  scsi-lsi53c895a-fix-use-after-free-in-ls.patch
  scsi-lsi53c895a-really-fix-use-after-fre.patch
  softmmu-Always-initialize-xlat-in-addres.patch
  sphinx-change-default-language-to-en.patch
  test-add-mapping-from-arch-of-i686-to-qe.patch
  tests-Fix-block-tests-to-be-compatible-w.patch
  tests-qtest-Move-the-fuzz-tests-to-x86-o.patch
  usb-Help-compiler-out-to-avoid-a-warning.patch

OBS-URL: https://build.opensuse.org/request/show/1006734
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=732
2022-09-29 06:46:40 +00:00

50 lines
1.9 KiB
Diff

From: Bruce Rogers <brogers@suse.com>
Date: Wed, 9 Mar 2016 15:18:11 -0700
Subject: xen_disk: Add suse specific flush disable handling and map to QEMU
equiv
Add code to read the suse specific suse-diskcache-disable-flush flag out
of xenstore, and set the equivalent flag within QEMU.
Patch taken from Xen's patch queue, Olaf Hering being the original author.
[bsc#879425]
[BR: minor edits to pass qemu's checkpatch script]
[BR: With qdevification of xen-block, code has changed significantly]
Signed-off-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
hw/block/xen-block.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index 345b284d70181727f17a64d51bf2..4c7f17c253e97bd747347aca3063 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -722,6 +722,8 @@ static XenBlockDrive *xen_block_drive_create(const char *id,
const char *mode = qdict_get_try_str(opts, "mode");
const char *direct_io_safe = qdict_get_try_str(opts, "direct-io-safe");
const char *discard_enable = qdict_get_try_str(opts, "discard-enable");
+ const char *suse_diskcache_disable_flush = qdict_get_try_str(opts,
+ "suse-diskcache-disable-flush");
char *driver = NULL;
char *filename = NULL;
XenBlockDrive *drive = NULL;
@@ -802,6 +804,16 @@ static XenBlockDrive *xen_block_drive_create(const char *id,
}
}
+ if (suse_diskcache_disable_flush) {
+ unsigned long value;
+ if (!qemu_strtoul(suse_diskcache_disable_flush, NULL, 2, &value) && !!value) {
+ QDict *cache_qdict = qdict_new();
+
+ qdict_put_bool(cache_qdict, "no-flush", true);
+ qdict_put_obj(file_layer, "cache", QOBJECT(cache_qdict));
+ }
+ }
+
/*
* It is necessary to turn file locking off as an emulated device
* may have already opened the same image file.