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142 Commits

Author SHA1 Message Date
Kirill A. Shutemov
fe3b415231 linux-user: Rewrite mmap_find_vma() to work fine on 64-bit hosts with 32-bit targets 
qemu's page table can be incomple if /proc/self/maps is unavailable or
host allocating a memory with mmap(), so we can't use it to find free
memory area.

New version mmap_find_vma() uses mmap() without MAP_FIXED to find free
memory.

Tested-by: Martin Mohring <martin.mohring@opensuse.org> :

quite some time ago this patch had been sent by Kirill to the QEMU ml.
At that time, the patch was rejected. Now we found out why the current
user mode memory allocator sometimes fails:

- Kernel Bug  linux/fs/proc/task_mmu.c (fixed after 2.6.27)
http://bugzilla.kernel.org/attachment.cgi?id=17219
- use of proc file system to find memory mappings => bad idea

So I please apply the attached patch from Kirill to qemu to fix this
longstanding bug, because it causes all older linux distros (using
kernel 2.6.26 or older) to fail the QEMU memory allocator in user mode.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
 2009-08-25 17:15:35 +03:00
Juan Quintela
2f7bb8780a rename USE_NPTL to CONFIG_USE_NPTL 
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
 2009-07-27 14:10:55 -05:00
Blue Swirl
0bf9e31af1 Fix most warnings (errors with -Werror) when debugging is enabled 
I used the following command to enable debugging:
perl -p -i -e 's/^\/\/#define DEBUG/#define DEBUG/g' * */* */*/*

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
 2009-07-20 17:19:25 +00:00
Blue Swirl
8167ee8839 Update to a hopefully more future proof FSF address 
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
 2009-07-16 20:47:01 +00:00
Nathan Froyd
df377d0354 linux-user: initialize mmap_mutex properly 
We initialize mmap_mutex in any child threads/processes, but we need to
correctly statically initialize it for the original process.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
 2009-06-16 16:58:45 +03:00
Riku Voipio
9ad197d95c export mmap_find_vma for shmat 
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
 2009-06-16 16:56:28 +03:00
edgar_igl
54c5a2ae54 Partialy fix mmap at EOF for large pagesize targets in user-mode. 
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6510 c046a42c-6fe2-441c-8c8c-71466251a162
 2009-02-03 23:06:34 +00:00
malc
baa8c60229 Fix qemu_malloc. 
make {linux,bsd}-user qemu_realloc handle ptr == NULL correctly.
spotted by malc.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6466 c046a42c-6fe2-441c-8c8c-71466251a162
 2009-01-28 17:16:56 +00:00
aliguori
1a6f0dbcc0 linux-user: add qemu_realloc() implementation to unbreak the build (Gerd Hoffman) 
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6412 c046a42c-6fe2-441c-8c8c-71466251a162
 2009-01-23 15:02:20 +00:00
blueswir1
530e7615ce Fix more FSF addresses 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6192 c046a42c-6fe2-441c-8c8c-71466251a162
 2009-01-05 18:11:53 +00:00
blueswir1
3af72a4d98 Fix mremap, based on patch by Kirill A. Shutemov 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6056 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-12-15 17:58:49 +00:00
blueswir1
5caf7bb2c4 Fix compiling without MREMAP_FIXED 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5979 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-12-11 19:12:25 +00:00
aurel32
f19412a2a6 linux-user: mremap(): handle MREMAP_FIXED and MREMAP_MAYMOVE correctly 
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5959 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-12-08 18:12:40 +00:00
aurel32
45bc1f5264 linux-user: mmap: add check if requested memory area fits target address space 
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5958 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-12-08 18:12:33 +00:00
blueswir1
78f5bf1e6f Include qemu-common.h in order to get prototypes for qemu_malloc etc. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5402 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-10-02 19:55:50 +00:00
pbrook
17e2377abf Prevent guest reusing host memory allocations. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4710 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-06-09 13:47:45 +00:00
pbrook
d597536303 Multithreaded locking fixes. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4692 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-06-07 20:50:51 +00:00
pbrook
c8a706fe62 Multithreaded locking for mmap(). 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4654 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-06-02 16:16:42 +00:00
pbrook
0776590d70 Mark host brk() area as reserved. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4637 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-05-31 16:33:53 +00:00
balrog
7ab240ad4b Teach mmap to not overwrite reserved pages and fix brk return value (Richard Purdie). 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4255 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-04-26 12:17:34 +00:00
balrog
171cd1cdff Cope with arch-specific page protection flags in mmap (Richard Purdie). 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4250 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-04-24 21:11:41 +00:00
edgar_igl
2e0ded9c7c Use TARGET_FMT_lx. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4061 c046a42c-6fe2-441c-8c8c-71466251a162
 2008-03-14 14:11:05 +00:00
balrog
50a9569b59 Mark host pages as reserved (Magnus Damm). 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3813 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-12-12 01:16:23 +00:00
bellard
a03e2d421e fixed target_mmap() if host page size < TARGET_PAGE_SIZE 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3642 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-11-14 11:29:07 +00:00
ths
80210bcd71 Fix compiler warnings, by Stefan Weil. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3507 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-11-02 19:08:57 +00:00
blueswir1
992f48a036 Support for 32 bit ABI on 64 bit targets (only enabled Sparc64) 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3396 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-10-14 16:27:31 +00:00
ths
a5b85f7959 Fix mmap to handle differing host/target page sizes, by Edgar E. Iglesias. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3291 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-09-30 14:32:45 +00:00
j_mayer
4118a97030 memset string pages to zero to avoid putting random data on the stack 
that may make some program crash at startup.
Fix unsigned long / target_ulong confusion (more to do).
Fix missing g2h macros.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3249 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-09-27 04:10:43 +00:00
ths
3b46e62427 find -type f | xargs sed -i 's/[\t ]*$//g' # Yes, again. Note the star in the regex. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3177 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-09-17 08:09:54 +00:00
ths
5fafdf24ef find -type f | xargs sed -i 's/[\t ]$//g' # on most files 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-09-16 21:08:06 +00:00
ths
6b078dfd60 Add __mips__to mmap specialcase. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2932 c046a42c-6fe2-441c-8c8c-71466251a162
 2007-06-03 15:31:32 +00:00
pbrook
e6e5906b6e ColdFire target. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2196 c046a42c-6fe2-441c-8c8c-71466251a162
 2006-10-22 00:18:54 +00:00
pbrook
53a5960aad Avoid accessing guest memory directly in usermode emulation. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1790 c046a42c-6fe2-441c-8c8c-71466251a162
 2006-03-25 19:31:22 +00:00
pbrook
e89f07d384 Make target_mmap always return -1 on failure. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1741 c046a42c-6fe2-441c-8c8c-71466251a162
 2006-02-04 20:46:24 +00:00
bellard
b8076a748d ia64 host support (David Mosberger) 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1360 c046a42c-6fe2-441c-8c8c-71466251a162
 2005-04-07 22:20:31 +00:00
bellard
83fb7adf6c Darwin patch (initial patch by Pierre d'Herbemont) 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@980 c046a42c-6fe2-441c-8c8c-71466251a162
 2004-07-05 21:25:26 +00:00
bellard
4f2ac23784 amd64 port (Jocelyn Mayer) 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@762 c046a42c-6fe2-441c-8c8c-71466251a162
 2004-04-26 19:44:02 +00:00
bellard
bc51c5c989 initial x86-64 host support (Gwenole Beauchesne) 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@670 c046a42c-6fe2-441c-8c8c-71466251a162
 2004-03-17 23:46:04 +00:00
bellard
4a585ccb2f avoid unaligned file offset in anonymous mapping 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@215 c046a42c-6fe2-441c-8c8c-71466251a162
 2003-06-09 15:24:18 +00:00
bellard
917f95fd4d alpha fix 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@207 c046a42c-6fe2-441c-8c8c-71466251a162
 2003-06-05 00:56:37 +00:00
bellard
d418c81eff fixed small page handling 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@160 c046a42c-6fe2-441c-8c8c-71466251a162
 2003-05-13 00:57:50 +00:00
bellard
54936004fd mmap emulation 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@158 c046a42c-6fe2-441c-8c8c-71466251a162
 2003-05-13 00:25:15 +00:00