vduse: Support querying information of IOVA regions

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This introduces a new ioctl: VDUSE_IOTLB_GET_INFO to
support querying some information of IOVA regions.

Now it can be used to query whether the IOVA region
supports userspace memory registration.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Message-Id: <20220803045523.23851-6-xieyongji@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>

...

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Xie Yongji 2022-08-03 12:55:23 +08:00 • committed by Michael S. Tsirkin

parent 79a463be9e

commit ad146355bf

2 changed files with 63 additions and 0 deletions

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39

drivers/vdpa/vdpa_user/vduse_dev.c

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24

include/uapi/linux/vduse.h

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