From: Kevin Wolf <kwolf@redhat.com>
Date: Fri, 29 Nov 2013 20:29:17 +0000 (+0100)
Subject: qemu_memalign: Allow small alignments
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e5354657a626b325c31888f33de88ac6d39e2fcb;p=qemu.git

qemu_memalign: Allow small alignments

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>
---

diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index f5c401646f..d5dca4729a 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -88,6 +88,11 @@ void *qemu_oom_check(void *ptr)
 void *qemu_memalign(size_t alignment, size_t size)
 {
     void *ptr;
+
+    if (alignment < sizeof(void*)) {
+        alignment = sizeof(void*);
+    }
+
 #if defined(_POSIX_C_SOURCE) && !defined(__sun__)
     int ret;
     ret = posix_memalign(&ptr, alignment, size);