Commit 00d1f546 authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
Browse files

vdpa: make get_vq_group and set_group_asid optional 



This patch makes get_vq_group and set_group_asid optional. This is
needed to unbreak the vDPA parent that doesn't support multiple
address spaces.

Cc: Gautam Dawar <gautam.dawar@xilinx.com>
Fixes: aaca8373 ("vhost-vdpa: support ASID based IOTLB API")
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Message-Id: <20220609041901.2029-1-jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent acb0055e

drivers/vhost/vdpa.c

+2 −0
Original line number Diff line number Diff line
@@ -499,6 +499,8 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, 
		ops->set_vq_ready(vdpa, idx, s.num);

		return 0;

	case VHOST_VDPA_GET_VRING_GROUP:

		if (!ops->get_vq_group)

			return -EOPNOTSUPP;

		s.index = idx;

		s.num = ops->get_vq_group(vdpa, idx);

		if (s.num >= vdpa->ngroups)

include/linux/vdpa.h

+3 −2
Original line number Diff line number Diff line
@@ -178,7 +178,8 @@ struct vdpa_map_file { 
 *				for the device

 *				@vdev: vdpa device

 *				Returns virtqueue algin requirement

 * @get_vq_group:		Get the group id for a specific virtqueue

 * @get_vq_group:		Get the group id for a specific

 *				virtqueue (optional)

 *				@vdev: vdpa device

 *				@idx: virtqueue index

 *				Returns u32: group id for this virtqueue
@@ -243,7 +244,7 @@ struct vdpa_map_file { 
 *				Returns the iova range supported by

 *				the device.

 * @set_group_asid:		Set address space identifier for a

 *				virtqueue group

 *				virtqueue group (optional)

 *				@vdev: vdpa device

 *				@group: virtqueue group

 *				@asid: address space id for this group