Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull vhost fixes from Michael Tsirkin:
 "Fixes all over the place.

  A new UAPI is borderline: can also be considered a new feature but
  also seems to be the only way we could come up with to fix addressing
  for userspace - and it seems important to switch to it now before
  userspace making assumptions about addressing ability of devices is
  set in stone"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpasim: allow to assign a MAC address
  vdpasim: fix MAC address configuration
  vdpa: handle irq bypass register failure case
  vdpa_sim: Fix DMA mask
  Revert "vhost-vdpa: fix page pinning leakage in error path"
  vdpa/mlx5: Fix error return in map_direct_mr()
  vhost_vdpa: Return -EFAULT if copy_from_user() fails
  vdpa_sim: implement get_iova_range()
  vhost: vdpa: report iova range
  vdpa: introduce config op to get valid iova range

include/uapi/linux/vhost.h

@@ -146,4 +146,8 @@
 
 /* Set event fd for config interrupt*/
 #define VHOST_VDPA_SET_CONFIG_CALL	_IOW(VHOST_VIRTIO, 0x77, int)
+
+/* Get the valid iova range */
+#define VHOST_VDPA_GET_IOVA_RANGE	_IOR(VHOST_VIRTIO, 0x78, \
+					     struct vhost_vdpa_iova_range)
 #endif

include/uapi/linux/vhost_types.h

@@ -138,6 +138,15 @@ struct vhost_vdpa_config {
 	__u8 buf[0];
 };
 
+/* vhost vdpa IOVA range
+ * @first: First address that can be mapped by vhost-vDPA
+ * @last: Last address that can be mapped by vhost-vDPA
+ */
+struct vhost_vdpa_iova_range {
+	__u64 first;
+	__u64 last;
+};
+
 /* Feature bits */
 /* Log all write descriptors. Can be changed while device is active. */
 #define VHOST_F_LOG_ALL 26