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vhost,virtio,vdpa: features, fixes, cleanups

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vdpa/mlx5:
 	VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
 	new maintainer
 vdpa:
 	support for vq descriptor mappings
 	decouple reset of iotlb mapping from device reset
 
 fixes, cleanups all over the place
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "vhost,virtio,vdpa: features, fixes, cleanups.

  vdpa/mlx5:
   - VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
   - new maintainer

  vdpa:
   - support for vq descriptor mappings
   - decouple reset of iotlb mapping from device reset

  and fixes, cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits)
  vdpa_sim: implement .reset_map support
  vdpa/mlx5: implement .reset_map driver op
  vhost-vdpa: clean iotlb map during reset for older userspace
  vdpa: introduce .compat_reset operation callback
  vhost-vdpa: introduce IOTLB_PERSIST backend feature bit
  vhost-vdpa: reset vendor specific mapping to initial state in .release
  vdpa: introduce .reset_map operation callback
  virtio_pci: add check for common cfg size
  virtio-blk: fix implicit overflow on virtio_max_dma_size
  virtio_pci: add build offset check for the new common cfg items
  virtio: add definition of VIRTIO_F_NOTIF_CONFIG_DATA feature bit
  vduse: make vduse_class constant
  vhost-scsi: Spelling s/preceeding/preceding/g
  virtio: kdoc for struct virtio_pci_modern_device
  vdpa: Update sysfs ABI documentation
  MAINTAINERS: Add myself as mlx5_vdpa driver
  virtio-balloon: correct the comment of virtballoon_migratepage()
  mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
  vdpa/mlx5: Update cvq iotlb mapping on ASID change
  vdpa/mlx5: Make iotlb helper functions more generic
  ...
This commit is contained in:
Linus Torvalds 2023-11-05 09:02:32 -10:00
commit 77fa2fbe87
22 changed files with 546 additions and 186 deletions
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8
include/uapi/linux/vhost.h
View file

@ -219,4 +219,12 @@
*/
#define VHOST_VDPA_RESUME _IO(VHOST_VIRTIO, 0x7E)
/* Get the group for the descriptor table including driver & device areas
* of a virtqueue: read index, write group in num.
* The virtqueue index is stored in the index field of vhost_vring_state.
* The group ID of the descriptor table for this specific virtqueue
* is returned via num field of vhost_vring_state.
*/
#define VHOST_VDPA_GET_VRING_DESC_GROUP _IOWR(VHOST_VIRTIO, 0x7F, \
struct vhost_vring_state)
#endif

7
include/uapi/linux/vhost_types.h
View file

@ -185,5 +185,12 @@ struct vhost_vdpa_iova_range {
* DRIVER_OK
*/
#define VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK 0x6
/* Device may expose the virtqueue's descriptor area, driver area and
* device area to a different group for ASID binding than where its
* buffers may reside. Requires VHOST_BACKEND_F_IOTLB_ASID.
*/
#define VHOST_BACKEND_F_DESC_ASID 0x7
/* IOTLB don't flush memory mapping across device reset */
#define VHOST_BACKEND_F_IOTLB_PERSIST 0x8
#endif

5
include/uapi/linux/virtio_config.h
View file

@ -105,6 +105,11 @@
*/
#define VIRTIO_F_NOTIFICATION_DATA 38
/* This feature indicates that the driver uses the data provided by the device
* as a virtqueue identifier in available buffer notifications.
*/
#define VIRTIO_F_NOTIF_CONFIG_DATA 39
/*
* This feature indicates that the driver can reset a queue individually.
*/