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

Pull vhost,vdpa,virtio updates from Michael Tsirkin:

 - transport v3 support in virtio-mmio

 - suspend support in vduse

 - fixes, cleanups all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (54 commits)
  vduse: Add suspend
  vduse: do not take rwsem at reset work flush
  vduse: add F_QUEUE_READY feature
  vduse: add VDUSE_SET_FEATURES ioctl
  vduse: add VDUSE_GET_FEATURES ioctl
  vduse: store control device pointer
  tools/virtio: Fix control typo in trace agent comment
  tools/virtio: Fix userspace typo in vringh test comment
  vhost: reject zero-size IOTLB INVALIDATE
  vdpa: Remove redundant dev_err()
  virtio_ring: fix infinite loop in virtnet_poll_cleantx when device is broken
  vdpa/mlx5: roll back MR update after VQ setup failure
  MAINTAINERS: remove Gabriel from LiteX and fw-cfg drivers
  virtio_mem: fix typo in comment
  vdpa/solidrun: fix typos in snet_ctrl comments
  virtio: fix article before virtio in dma-buf comment
  vhost: fix inaccurate kdoc in iotlb helpers
  virtio: rtc: time out alarm requests
  vdpa/mlx5: fix wrong MLX5_ADDR_OF struct type in alloc_inout()
  vdpa: octeon_ep: add missing MODULE_DEVICE_TABLE()
  ...

5 files changed, 40 insertions, 1 deletions

diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 28f086c4a187..d929d83abf3b 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -126,6 +126,15 @@ struct nd_mapping_desc {
 struct bio;
 struct resource;
 struct nd_region;
+
+/*
+ * Provider flush callback return values:
+ *   0: flush completed synchronously
+ *  <0: flush failed
+ *  >0: flush completion was queued and @bio will be completed later
+ */
+#define NVDIMM_FLUSH_ASYNC 1
+
 struct nd_region_desc {
 	struct resource *res;
 	struct nd_mapping_desc *mapping;
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 93e573c56563..f923e42cfd01 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -213,6 +213,7 @@ int virtio_device_freeze(struct virtio_device *dev);
 int virtio_device_restore(struct virtio_device *dev);
 #endif
 void virtio_reset_device(struct virtio_device *dev);
+void virtio_device_shutdown(struct virtio_device *dev);
 int virtio_device_reset_prepare(struct virtio_device *dev);
 int virtio_device_reset_done(struct virtio_device *dev);
 
diff --git a/include/linux/virtio_dma_buf.h b/include/linux/virtio_dma_buf.h
index a2fdf217ac62..545ac5f17a54 100644
--- a/include/linux/virtio_dma_buf.h
+++ b/include/linux/virtio_dma_buf.h
@@ -17,7 +17,7 @@
  * @ops: the base dma_buf_ops. ops.attach MUST be virtio_dma_buf_attach.
  * @device_attach: [optional] callback invoked by virtio_dma_buf_attach during
  *		   all attach operations.
- * @get_uid: [required] callback to get the uuid of the exported object.
+ * @get_uuid: [required] callback to get the uuid of the exported object.
  */
 struct virtio_dma_buf_ops {
 	struct dma_buf_ops ops;
diff --git a/include/uapi/linux/vduse.h b/include/uapi/linux/vduse.h
index 361eea511c21..b7f8c04a0a44 100644
--- a/include/uapi/linux/vduse.h
+++ b/include/uapi/linux/vduse.h
@@ -14,6 +14,12 @@
 
 #define VDUSE_API_VERSION_1	1
 
+/* The VDUSE instance expects a request for vq ready */
+#define VDUSE_F_QUEUE_READY	0
+
+/* The VDUSE instance expects a request for suspend */
+#define VDUSE_F_SUSPEND		1
+
 /*
  * Get the version of VDUSE API that kernel supported (VDUSE_API_VERSION).
  * This is used for future extension.
@@ -63,6 +69,12 @@ struct vduse_dev_config {
  */
 #define VDUSE_DESTROY_DEV	_IOW(VDUSE_BASE, 0x03, char[VDUSE_NAME_MAX])
 
+/* Get the VDUSE supported features */
+#define VDUSE_GET_FEATURES	_IOR(VDUSE_BASE, 0x04, __u64)
+
+/* Set the VDUSE features */
+#define VDUSE_SET_FEATURES	_IOW(VDUSE_BASE, 0x05, __u64)
+
 /* The ioctls for VDUSE device (/dev/vduse/$NAME) */
 
 /**
@@ -325,6 +337,8 @@ enum vduse_req_type {
 	VDUSE_SET_STATUS,
 	VDUSE_UPDATE_IOTLB,
 	VDUSE_SET_VQ_GROUP_ASID,
+	VDUSE_SET_VQ_READY,
+	VDUSE_SUSPEND,
 };
 
 /**
@@ -373,6 +387,15 @@ struct vduse_iova_range_v2 {
 };
 
 /**
+ * struct vduse_vq_ready - Virtqueue ready request message
+ * @num: Virtqueue number
+ */
+struct vduse_vq_ready {
+	__u32 num;
+	__u32 ready;
+};
+
+/**
  * struct vduse_dev_request - control request
  * @type: request type
  * @request_id: request id
@@ -382,6 +405,7 @@ struct vduse_iova_range_v2 {
  * @iova: IOVA range for updating
  * @iova_v2: IOVA range for updating if API_VERSION >= 1
  * @vq_group_asid: ASID of a virtqueue group
+ * @vq_ready: Virtqueue ready request
  * @padding: padding
  *
  * Structure used by read(2) on /dev/vduse/$NAME.
@@ -399,6 +423,10 @@ struct vduse_dev_request {
 		 */
 		struct vduse_iova_range_v2 iova_v2;
 		struct vduse_vq_group_asid vq_group_asid;
+
+		/* Only if VDUSE_F_QUEUE_READY is negotiated */
+		struct vduse_vq_ready vq_ready;
+
 		__u32 padding[32];
 	};
 };
diff --git a/include/uapi/linux/virtio_ids.h b/include/uapi/linux/virtio_ids.h
index 6c12db16faa3..f9056af0c622 100644
--- a/include/uapi/linux/virtio_ids.h
+++ b/include/uapi/linux/virtio_ids.h
@@ -69,6 +69,7 @@
 #define VIRTIO_ID_BT			40 /* virtio bluetooth */
 #define VIRTIO_ID_GPIO			41 /* virtio gpio */
 #define VIRTIO_ID_SPI			45 /* virtio spi */
+#define VIRTIO_ID_MEDIA			48 /* virtio media */
 
 /*
  * Virtio Transitional IDs