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vdpa: support exposing the count of vqs to userspace

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- GET_VQS_COUNT: the count of virtqueues that exposed

Signed-off-by: Longpeng <longpeng2@huawei.com>
Link: https://lore.kernel.org/r/20220315032553.455-4-longpeng2@huawei.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Longpeng &lt;<a href="mailto:longpeng2@huawei.com" target="_blank">longpeng2@huawei.com</a>&gt;<br>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
This commit is contained in:
Longpeng 2022-03-15 11:25:53 +08:00 • committed by Michael S. Tsirkin
parent 81d46d6931
commit b04d910af3
2 changed files with 16 additions and 0 deletions
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3
include/uapi/linux/vhost.h
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@ -154,4 +154,7 @@
/* Get the config size */
#define VHOST_VDPA_GET_CONFIG_SIZE _IOR(VHOST_VIRTIO, 0x79, __u32)
/* Get the count of all virtqueues */
#define VHOST_VDPA_GET_VQS_COUNT _IOR(VHOST_VIRTIO, 0x80, __u32)
#endif