linux-toradex.git/include/uapi/linux/vhost.h, branch v5.19-rc7

vhost-vdpa: introduce uAPI to set group ASID

2022-05-31T16:44:31+00:00

Follows the vDPA support for associating ASID to a specific virtqueue
group. This patch adds a uAPI to support setting them from userspace.

Signed-off-by: Jason Wang 
Signed-off-by: Gautam Dawar 
Message-Id: <20220330180436.24644-15-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin

vhost-vdpa: uAPI to get virtqueue group id

2022-05-31T16:44:31+00:00

Follows the support for virtqueue group in vDPA. This patches
introduces uAPI to get the virtqueue group ID for a specific virtqueue
in vhost-vdpa.

Signed-off-by: Jason Wang 
Signed-off-by: Gautam Dawar 
Message-Id: <20220330180436.24644-14-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin

vhost-vdpa: introduce uAPI to get the number of address spaces

2022-05-31T16:44:30+00:00

This patch introduces the uAPI for getting the number of address
spaces supported by this vDPA device.

Signed-off-by: Jason Wang 
Signed-off-by: Gautam Dawar 
Message-Id: <20220330180436.24644-13-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin

vhost-vdpa: introduce uAPI to get the number of virtqueue groups

2022-05-31T16:44:30+00:00

Follows the vDPA support for multiple address spaces, this patch
introduce uAPI for the userspace to know the number of virtqueue
groups supported by the vDPA device.

Signed-off-by: Jason Wang 
Signed-off-by: Gautam Dawar 
Message-Id: <20220330180436.24644-12-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin

vhost: move the backend feature bits to vhost_types.h

2022-05-31T16:44:25+00:00

We should store feature bits in vhost_types.h as what has been done
for e.g VHOST_F_LOG_ALL.

Signed-off-by: Jason Wang 
Signed-off-by: Gautam Dawar 
Message-Id: <20220330180436.24644-2-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin

vdpa: support exposing the count of vqs to userspace

2022-03-28T20:53:00+00:00

- GET_VQS_COUNT: the count of virtqueues that exposed

Signed-off-by: Longpeng 
Link: https://lore.kernel.org/r/20220315032553.455-4-longpeng2@huawei.com
Signed-off-by: Michael S. Tsirkin 
Acked-by: Jason Wang 
Signed-off-by: Longpeng <longpeng2@huawei.com>

Reviewed-by: Stefano Garzarella

vdpa: support exposing the config size to userspace

2022-03-28T20:53:00+00:00

- GET_CONFIG_SIZE: return the size of the virtio config space.

The size contains the fields which are conditional on feature
bits.

Acked-by: Jason Wang 
Signed-off-by: Longpeng 
Link: https://lore.kernel.org/r/20220315032553.455-2-longpeng2@huawei.com
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Stefano Garzarella

vhost: vdpa: report iova range

2020-10-23T15:55:28+00:00

This patch introduces a new ioctl for vhost-vdpa device that can
report the iova range by the device.

For device that implements get_iova_range() method, we fetch it from
the vDPA device. If device doesn't implement get_iova_range() but
depends on platform IOMMU, we will query via DOMAIN_ATTR_GEOMETRY,
otherwise [0, ULLONG_MAX] is assumed.

For safety, this patch also rules out the map request which is not in
the valid range.

Signed-off-by: Jason Wang 
Link: https://lore.kernel.org/r/20201023090043.14430-3-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin

vhost-vdpa: support IOTLB batching hints

2020-08-05T22:39:18+00:00

This patches extend the vhost IOTLB API to accept batch updating hints
form userspace. When userspace wants update the device IOTLB in a
batch, it may do:

1) Write vhost_iotlb_msg with VHOST_IOTLB_BATCH_BEGIN flag
2) Perform a batch of IOTLB updating via VHOST_IOTLB_UPDATE/INVALIDATE
3) Write vhost_iotlb_msg with VHOST_IOTLB_BATCH_END flag

Vhost-vdpa may decide to batch the IOMMU/IOTLB updating in step 3 when
vDPA device support set_map() ops. This is useful for the vDPA device
that want to know all the mappings to tweak their own DMA translation
logic.

For vDPA device that doesn't require set_map(), no behavior changes.

This capability is advertised via VHOST_BACKEND_F_IOTLB_BATCH capability.

Signed-off-by: Jason Wang 
Link: https://lore.kernel.org/r/20200804162048.22587-5-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin

vhost_vdpa: Support config interrupt in vdpa

2020-06-06T20:26:27+00:00

This commit implements config interrupt support in
vhost_vdpa layer.

Signed-off-by: Zhu Lingshan 
Acked-by: Jason Wang 
Link: https://lore.kernel.org/r/1591352835-22441-4-git-send-email-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin