From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44547) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Voz7Z-00019P-1m for qemu-devel@nongnu.org; Fri, 06 Dec 2013 12:23:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Voz7S-0001mW-SR for qemu-devel@nongnu.org; Fri, 06 Dec 2013 12:23:20 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33720) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Voz7S-0001mS-Kk for qemu-devel@nongnu.org; Fri, 06 Dec 2013 12:23:14 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rB6HNEhG011320 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 6 Dec 2013 12:23:14 -0500 From: Kevin Wolf Date: Fri, 6 Dec 2013 18:22:42 +0100 Message-Id: <1386350580-5666-2-git-send-email-kwolf@redhat.com> In-Reply-To: <1386350580-5666-1-git-send-email-kwolf@redhat.com> References: <1386350580-5666-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [RFC PATCH 01/19] qemu_memalign: Allow small alignments List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, pbonzini@redhat.com, armbru@redhat.com, stefanha@redhat.com 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 --- util/oslib-posix.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/util/oslib-posix.c b/util/oslib-posix.c index e00a44c..54f8932 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -85,6 +85,11 @@ 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); -- 1.8.1.4