From ed6f53f9ca9eda16f5edb157fbfe6be09cefc537 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 21 Oct 2020 19:38:03 +0200 Subject: util/oslib: Assert qemu_try_memalign() alignment is a power of 2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit qemu_try_memalign() expects a power of 2 alignment: - posix_memalign(3): The address of the allocated memory will be a multiple of alignment, which must be a power of two and a multiple of sizeof(void *). - _aligned_malloc() The alignment value, which must be an integer power of 2. Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20201021173803.2619054-3-philmd@redhat.com> Signed-off-by: Richard Henderson --- util/oslib-posix.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'util/oslib-posix.c') diff --git a/util/oslib-posix.c b/util/oslib-posix.c index f1e2801..359c52d 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -201,6 +201,8 @@ void *qemu_try_memalign(size_t alignment, size_t size) if (alignment < sizeof(void*)) { alignment = sizeof(void*); + } else { + g_assert(is_power_of_2(alignment)); } #if defined(CONFIG_POSIX_MEMALIGN) -- cgit v1.1