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Date: Thu, 24 Sep 2020 11:21:18 +0800 From: Jason Wang <jasowang@...hat.com> To: mst@...hat.com, jasowang@...hat.com Cc: lulu@...hat.com, kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, rob.miller@...adcom.com, lingshan.zhu@...el.com, eperezma@...hat.com, hanand@...inx.com, mhabets@...arflare.com, eli@...lanox.com, amorenoz@...hat.com, maxime.coquelin@...hat.com, stefanha@...hat.com, sgarzare@...hat.com Subject: [RFC PATCH 17/24] vhost-vdpa: introduce uAPI to set group ASID 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 <jasowang@...hat.com> --- drivers/vhost/vdpa.c | 8 ++++++++ include/uapi/linux/vhost.h | 4 ++++ 2 files changed, 12 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index a234d3783e16..978cf97dc03a 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -441,6 +441,14 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, else if (copy_to_user(argp, &s, sizeof s)) return -EFAULT; return 0; + case VHOST_VDPA_SET_GROUP_ASID: + if (copy_from_user(&s, argp, sizeof(s))) + return -EFAULT; + if (s.num >= vdpa->ngroups) + return -EINVAL; + if (!ops->set_group_asid) + return -ENOTSUPP; + return ops->set_group_asid(vdpa, idx, s.num); case VHOST_GET_VRING_BASE: r = ops->get_vq_state(v->vdpa, idx, &vq_state); if (r) diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index d1c4b5561fee..f3de9e45c518 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -151,4 +151,8 @@ /* Get the group for a virtqueue: read index, write group in num */ #define VHOST_VDPA_GET_VRING_GROUP _IOWR(VHOST_VIRTIO, 0x79, \ struct vhost_vring_state) +/* Set the ASID for a virtqueue group. */ +#define VHOST_VDPA_SET_GROUP_ASID _IOW(VHOST_VIRTIO, 0x7A, \ + struct vhost_vring_state) + #endif -- 2.20.1
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