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43 Commits

Author SHA1 Message Date
Blue Swirl 1e6eec8b33 Fix Sparse warnings: add "static" 
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
 2009-09-05 10:14:07 +00:00
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