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-rw-r--r--subprojects/libvhost-user/libvhost-user.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/subprojects/libvhost-user/libvhost-user.h b/subprojects/libvhost-user/libvhost-user.h
index 3d13dfadde..cde9f07bb3 100644
--- a/subprojects/libvhost-user/libvhost-user.h
+++ b/subprojects/libvhost-user/libvhost-user.h
@@ -129,6 +129,8 @@ typedef struct VhostUserMemoryRegion {
     uint64_t mmap_offset;
 } VhostUserMemoryRegion;
 
+#define VHOST_USER_MEM_REG_SIZE (sizeof(VhostUserMemoryRegion))
+
 typedef struct VhostUserMemory {
     uint32_t nregions;
     uint32_t padding;