Signed-off-by: Gonglei <address@hidden>
---
util/mmap-alloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/util/mmap-alloc.c b/util/mmap-alloc.c
index 5a85aa3..577862b 100644
--- a/util/mmap-alloc.c
+++ b/util/mmap-alloc.c
@@ -61,13 +61,15 @@ void *qemu_ram_mmap(int fd, size_t size, size_t align, bool
shared)
#else
void *ptr = mmap(0, total, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
#endif
- size_t offset = QEMU_ALIGN_UP((uintptr_t)ptr, align) - (uintptr_t)ptr;
+ size_t offset;
void *ptr1;
if (ptr == MAP_FAILED) {
return MAP_FAILED;
}
+ offset = QEMU_ALIGN_UP((uintptr_t)ptr, align) - (uintptr_t)ptr;
+
/* Make sure align is a power of 2 */
assert(!(align & (align - 1)));
/* Always align to host page size */