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Accepting request 85070 from openSUSE:Tools:Unstable

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reboot syscall and more mmap fixes

OBS-URL: https://build.opensuse.org/request/show/85070
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=18
This commit is contained in:
Cristian Rodríguez 2011-09-28 16:43:33 +00:00 committed by Git OBS Bridge
parent 54a31a9429
commit 57f72b0579
4 changed files with 105 additions and 24 deletions
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81
0010-qemu-cvs-mmap-amd64.patch
View File

@ -1,33 +1,21 @@
From 2013ec7c2d1b5a71d73701da746363b69d4c992c Mon Sep 17 00:00:00 2001
From: Ulrich Hecht <uli@suse.de>
Date: Tue, 14 Apr 2009 16:34:05 +0200
Subject: [PATCH 10/17] qemu-cvs-mmap-amd64
From: Alexander Graf <agraf@suse.de>
Map stuff to address space < 4GB on AMD64. This patch got continually smaller
as most cases were this was an issue were dealt with in other ways. May
already be fully obsolete.
When executing 32-bit guest binaries on 64-bit hosts, mmap() can return
a 64-bit pointer. Tell mmap() to always map in 32-bit address space, so
we make 32-bit guest applications happy.
Signed-off-by: Ulrich Hecht <uli@suse.de>
This is a hack and should not go upstream in its current form!
Signed-off-by: Alexander Graf <agraf@suse.de>
---
linux-user/mmap.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
linux-user/mmap.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index e18c228..de8abe9 100644
index 994c02b..e24b63a 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -31,6 +31,10 @@
#include "qemu.h"
#include "qemu-common.h"
+#if !defined(MAP_32BIT)
+#define MAP_32BIT 0
+#endif
+
//#define DEBUG_MMAP
#if defined(CONFIG_USE_NPTL)
@@ -169,7 +173,7 @@ static int mmap_frag(abi_ulong real_start,
@@ -169,7 +169,7 @@ static int mmap_frag(abi_ulong real_start,
if (prot1 == 0) {
/* no page was there, so we allocate one */
void *p = mmap(host_start, qemu_host_page_size, prot,
@ -36,6 +24,51 @@ index e18c228..de8abe9 100644
if (p == MAP_FAILED)
return -1;
prot1 = prot;
@@ -292,7 +292,7 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size)
* - shmat() with SHM_REMAP flag
*/
ptr = mmap(g2h(addr), size, PROT_NONE,
- MAP_ANONYMOUS|MAP_PRIVATE|MAP_NORESERVE, -1, 0);
+ MAP_ANONYMOUS|MAP_PRIVATE|MAP_NORESERVE|MAP_32BIT, -1, 0);
/* ENOMEM, if host address space has no memory */
if (ptr == MAP_FAILED) {
@@ -454,14 +454,14 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
especially important if qemu_host_page_size >
qemu_real_host_page_size */
p = mmap(g2h(mmap_start),
- host_len, prot, flags | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
+ host_len, prot, flags | MAP_FIXED | MAP_ANONYMOUS | MAP_32BIT, -1, 0);
if (p == MAP_FAILED)
goto fail;
/* update start so that it points to the file position at 'offset' */
host_start = (unsigned long)p;
if (!(flags & MAP_ANONYMOUS)) {
p = mmap(g2h(mmap_start), len, prot,
- flags | MAP_FIXED, fd, host_offset);
+ flags | MAP_FIXED | MAP_32BIT, fd, host_offset);
host_start += offset - host_offset;
}
start = h2g(host_start);
@@ -547,7 +547,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
else
offset1 = offset + real_start - start;
p = mmap(g2h(real_start), real_end - real_start,
- prot, flags, fd, offset1);
+ prot, flags | MAP_32BIT, fd, offset1);
if (p == MAP_FAILED)
goto fail;
}
@@ -603,7 +603,7 @@ static void mmap_reserve(abi_ulong start, abi_ulong size)
}
if (real_start != real_end) {
mmap(g2h(real_start), real_end - real_start, PROT_NONE,
- MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE,
+ MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE | MAP_32BIT,
-1, 0);
}
}
--
1.7.1
1.6.0.2

40
0020-linux-user-implement-reboot-syscall.patch Normal file
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@ -0,0 +1,40 @@
From: Alexander Graf <agraf@suse.de>
For OBS, we're running a full cross-guest inside of a VM. When a build
is done there, we reboot the guest as shutdown mechanism.
Unfortunately, reboot is not implemented in linux-user. So this mechanism
fails, spilling unpretty warnings. This patch implements sys_reboot()
emulation.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
linux-user/syscall.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
Index: qemu-0.14.1/linux-user/syscall.c
===================================================================
--- qemu-0.14.1.orig/linux-user/syscall.c
+++ qemu-0.14.1/linux-user/syscall.c
@@ -239,6 +239,8 @@ _syscall6(int,sys_futex,int *,uaddr,int,
const struct timespec *,timeout,int *,uaddr2,int,val3)
#endif
#endif
+_syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
+ void *, arg);
static bitmask_transtbl fcntl_flags_tbl[] = {
{ TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
@@ -5536,7 +5538,11 @@ abi_long do_syscall(void *cpu_env, int n
break;
#endif
case TARGET_NR_reboot:
- goto unimplemented;
+ if (!(p = lock_user_string(arg4)))
+ goto efault;
+ ret = reboot(arg1, arg2, arg3, p);
+ unlock_user(p, arg4, 0);
+ break;
#ifdef TARGET_NR_readdir
case TARGET_NR_readdir:
goto unimplemented;

6
qemu.changes
View File

@ -1,3 +1,9 @@
-------------------------------------------------------------------
Tue Sep 27 09:57:34 UTC 2011 - adrian@suse.de
- add 0020-linux-user-implement-reboot-syscall.patch from alex
- extend 0010 mmap patch for files
-------------------------------------------------------------------
Mon Sep 26 15:53:41 UTC 2011 - adrian@suse.de

2
qemu.spec
View File

@ -44,6 +44,7 @@ Patch16: 0016-fix-mipsn32-linux-user-builds.patch
Patch17: 0017-S-390-build-fix.patch
Patch18: 0018-qemu-0.14.1-mcast-udp.patch
Patch19: 0019-linux-user-fix-openat.patch
Patch20: 0020-linux-user-implement-reboot-syscall.patch
# this is to make lint happy
Source300: rpmlintrc
BuildRoot: %{_tmppath}/%{name}-%{version}-build
@ -106,6 +107,7 @@ Authors:
%patch16 -p1
%patch18 -p1
%patch19 -p1
%patch20 -p1
%build
# build QEMU