hostmem: add property to map memory with MAP_SHARED
A new "share" property can be used with the "memory-file" backend to
map memory with MAP_SHARED instead of MAP_PRIVATE.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/memory.c b/memory.c
index e7f1160..b91a60a 100644
--- a/memory.c
+++ b/memory.c
@@ -1038,6 +1038,7 @@
struct Object *owner,
const char *name,
uint64_t size,
+ bool share,
const char *path,
Error **errp)
{
@@ -1045,7 +1046,7 @@
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
- mr->ram_addr = qemu_ram_alloc_from_file(size, mr, path, errp);
+ mr->ram_addr = qemu_ram_alloc_from_file(size, mr, share, path, errp);
}
#endif