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-rw-r--r--backends/hostmem.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 7f5de70609..162c2187d8 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -224,7 +224,7 @@ static void host_memory_backend_set_prealloc(Object *obj, bool value,
         void *ptr = memory_region_get_ram_ptr(&backend->mr);
         uint64_t sz = memory_region_size(&backend->mr);
 
-        os_mem_prealloc(fd, ptr, sz, &local_err);
+        os_mem_prealloc(fd, ptr, sz, smp_cpus, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
             return;
@@ -328,7 +328,7 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp)
          */
         if (backend->prealloc) {
             os_mem_prealloc(memory_region_get_fd(&backend->mr), ptr, sz,
-                            &local_err);
+                            smp_cpus, &local_err);
             if (local_err) {
                 goto out;
             }