4 files changed, 36 insertions, 1 deletions
diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
index 5dac61f..81283ec 100644
--- a/include/hw/virtio/vhost-backend.h
+++ b/include/hw/virtio/vhost-backend.h
@@ -101,6 +101,9 @@ typedef int (*vhost_crypto_create_session_op)(struct vhost_dev *dev,
 typedef int (*vhost_crypto_close_session_op)(struct vhost_dev *dev,
                                              uint64_t session_id);
 
+typedef bool (*vhost_backend_mem_section_filter_op)(struct vhost_dev *dev,
+                                                MemoryRegionSection *section);
+
 typedef struct VhostOps {
     VhostBackendType backend_type;
     vhost_backend_init vhost_backend_init;
@@ -138,6 +141,7 @@ typedef struct VhostOps {
     vhost_set_config_op vhost_set_config;
     vhost_crypto_create_session_op vhost_crypto_create_session;
     vhost_crypto_close_session_op vhost_crypto_close_session;
+    vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter;
 } VhostOps;
 
 extern const VhostOps user_ops;
diff --git a/include/hw/virtio/vhost-user-blk.h b/include/hw/virtio/vhost-user-blk.h
index 5804cc9..d52944a 100644
--- a/include/hw/virtio/vhost-user-blk.h
+++ b/include/hw/virtio/vhost-user-blk.h
@@ -21,6 +21,7 @@
 #include "hw/block/block.h"
 #include "chardev/char-fe.h"
 #include "hw/virtio/vhost.h"
+#include "hw/virtio/vhost-user.h"
 
 #define TYPE_VHOST_USER_BLK "vhost-user-blk"
 #define VHOST_USER_BLK(obj) \
@@ -34,8 +35,8 @@ typedef struct VHostUserBlk {
     uint16_t num_queues;
     uint32_t queue_size;
     uint32_t config_wce;
-    uint32_t config_ro;
     struct vhost_dev dev;
+    VhostUserState *vhost_user;
 } VHostUserBlk;
 
 #endif
diff --git a/include/hw/virtio/vhost-user-scsi.h b/include/hw/virtio/vhost-user-scsi.h
index 01861f7..3ec34ae 100644
--- a/include/hw/virtio/vhost-user-scsi.h
+++ b/include/hw/virtio/vhost-user-scsi.h
@@ -21,6 +21,7 @@
 #include "hw/qdev.h"
 #include "hw/virtio/virtio-scsi.h"
 #include "hw/virtio/vhost.h"
+#include "hw/virtio/vhost-user.h"
 #include "hw/virtio/vhost-scsi-common.h"
 
 #define TYPE_VHOST_USER_SCSI "vhost-user-scsi"
@@ -30,6 +31,7 @@
 typedef struct VHostUserSCSI {
     VHostSCSICommon parent_obj;
     uint64_t host_features;
+    VhostUserState *vhost_user;
 } VHostUserSCSI;
 
 #endif /* VHOST_USER_SCSI_H */
diff --git a/include/hw/virtio/vhost-user.h b/include/hw/virtio/vhost-user.h
new file mode 100644
index 0000000..fd66039
--- /dev/null
+++ b/include/hw/virtio/vhost-user.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2017-2018 Intel Corporation
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_VIRTIO_VHOST_USER_H
+#define HW_VIRTIO_VHOST_USER_H
+
+#include "chardev/char-fe.h"
+#include "hw/virtio/virtio.h"
+
+typedef struct VhostUserHostNotifier {
+    MemoryRegion mr;
+    void *addr;
+    bool set;
+} VhostUserHostNotifier;
+
+typedef struct VhostUserState {
+    CharBackend *chr;
+    VhostUserHostNotifier notifier[VIRTIO_QUEUE_MAX];
+} VhostUserState;
+
+VhostUserState *vhost_user_init(void);
+void vhost_user_cleanup(VhostUserState *user);
+
+#endif