diff options
Diffstat (limited to 'util/oslib-posix.c')
| -rw-r--r-- | util/oslib-posix.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 27972d4add..a0fcdc2ede 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -128,7 +128,7 @@ void *qemu_memalign(size_t alignment, size_t size) void *qemu_anon_ram_alloc(size_t size, uint64_t *alignment) { size_t align = QEMU_VMALLOC_ALIGN; - size_t total = size + align - getpagesize(); + size_t total = size + align; void *ptr = mmap(0, total, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); size_t offset = QEMU_ALIGN_UP((uintptr_t)ptr, align) - (uintptr_t)ptr; void *ptr1; @@ -154,8 +154,8 @@ void *qemu_anon_ram_alloc(size_t size, uint64_t *alignment) if (offset > 0) { munmap(ptr - offset, offset); } - if (total > size) { - munmap(ptr + size, total - size); + if (total > size + getpagesize()) { + munmap(ptr + size + getpagesize(), total - size - getpagesize()); } trace_qemu_anon_ram_alloc(size, ptr); @@ -172,7 +172,7 @@ void qemu_anon_ram_free(void *ptr, size_t size) { trace_qemu_anon_ram_free(ptr, size); if (ptr) { - munmap(ptr, size); + munmap(ptr, size + getpagesize()); } } |