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qemu_memalign: Allow small alignments

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The functions used by qemu_memalign() require an alignment that is at
least sizeof(void*). Adjust it if it is too small.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoît Canet <benoit@irqsave.net>
This commit is contained in:
Kevin Wolf 2013-11-29 21:29:17 +01:00
parent 355ef4ac95
commit e5354657a6
1 changed files with 5 additions and 0 deletions
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5
util/oslib-posix.c
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@ -88,6 +88,11 @@ void *qemu_oom_check(void *ptr)
void *qemu_memalign(size_t alignment, size_t size) void *qemu_memalign(size_t alignment, size_t size)
{ {
void *ptr; void *ptr;
if (alignment < sizeof(void*)) {
alignment = sizeof(void*);
}
#if defined(_POSIX_C_SOURCE) && !defined(__sun__) #if defined(_POSIX_C_SOURCE) && !defined(__sun__)
int ret; int ret;
ret = posix_memalign(&ptr, alignment, size); ret = posix_memalign(&ptr, alignment, size);