diff options
Diffstat (limited to 'backends/hostmem.c')
| -rw-r--r-- | backends/hostmem.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/backends/hostmem.c b/backends/hostmem.c index eb9682b4a8..1edc0ede2a 100644 --- a/backends/hostmem.c +++ b/backends/hostmem.c @@ -20,6 +20,7 @@ #include "qom/object_interfaces.h" #include "qemu/mmap-alloc.h" #include "qemu/madvise.h" +#include "qemu/cutils.h" #include "hw/qdev-core.h" #ifdef CONFIG_NUMA @@ -325,6 +326,7 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp) HostMemoryBackendClass *bc = MEMORY_BACKEND_GET_CLASS(uc); void *ptr; uint64_t sz; + size_t pagesize; bool async = !phase_check(PHASE_LATE_BACKENDS_CREATED); if (!bc->alloc) { @@ -336,6 +338,14 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp) ptr = memory_region_get_ram_ptr(&backend->mr); sz = memory_region_size(&backend->mr); + pagesize = qemu_ram_pagesize(backend->mr.ram_block); + + if (backend->aligned && !QEMU_IS_ALIGNED(sz, pagesize)) { + g_autofree char *pagesize_str = size_to_str(pagesize); + error_setg(errp, "backend '%s' memory size must be multiple of %s", + object_get_typename(OBJECT(uc)), pagesize_str); + return; + } if (backend->merge) { qemu_madvise(ptr, sz, QEMU_MADV_MERGEABLE); |