On 2020/12/30 下午6:05, Eli Cohen wrote:
On Wed, Dec 16, 2020 at 02:48:09PM +0800, Jason Wang wrote: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<jasow...@redhat.com> --- drivers/vhost/vdpa.c | 4 ++++ include/uapi/linux/vhost.h | 3 +++ 2 files changed, 7 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 060d5b5b7e64..1ba5901b28e7 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -536,6 +536,10 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep, case VHOST_VDPA_GET_VRING_NUM: r = vhost_vdpa_get_vring_num(v, argp); break; + case VHOST_VDPA_GET_GROUP_NUM: + r = copy_to_user(argp, &v->vdpa->ngroups, + sizeof(v->vdpa->ngroups)); + break;Is this and other ioctls already supported in qemu?
Not yet, the prototype is under development. I test the series with a small and dedicated userspace program. Thanks
