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Diffstat (limited to 'hw/virtio/vhost-user.c')
-rw-r--r--hw/virtio/vhost-user.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 5d512898cf..e10ce87299 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -25,9 +25,10 @@
 
 #define VHOST_MEMORY_MAX_NREGIONS    8
 #define VHOST_USER_F_PROTOCOL_FEATURES 30
-#define VHOST_USER_PROTOCOL_FEATURE_MASK 0x1ULL
 
-#define VHOST_USER_PROTOCOL_F_MQ    0
+#define VHOST_USER_PROTOCOL_FEATURE_MASK 0x3ULL
+#define VHOST_USER_PROTOCOL_F_MQ         0
+#define VHOST_USER_PROTOCOL_F_LOG_SHMFD  1
 
 typedef enum VhostUserRequest {
     VHOST_USER_NONE = 0,
@@ -458,6 +459,14 @@ static int vhost_user_memslots_limit(struct vhost_dev *dev)
     return VHOST_MEMORY_MAX_NREGIONS;
 }
 
+static bool vhost_user_requires_shm_log(struct vhost_dev *dev)
+{
+    assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER);
+
+    return virtio_has_feature(dev->protocol_features,
+                              VHOST_USER_PROTOCOL_F_LOG_SHMFD);
+}
+
 const VhostOps user_ops = {
         .backend_type = VHOST_BACKEND_TYPE_USER,
         .vhost_call = vhost_user_call,
@@ -467,4 +476,5 @@ const VhostOps user_ops = {
         .vhost_backend_set_vring_enable = vhost_user_set_vring_enable,
         .vhost_backend_memslots_limit = vhost_user_memslots_limit,
         .vhost_set_log_base = vhost_set_log_base,
+        .vhost_requires_shm_log = vhost_user_requires_shm_log,
 };