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| author | Jason Wang <jasowang@redhat.com> | 2020-10-23 12:00:42 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-10-23 18:55:28 +0300 |
| commit | 1b48dc03e575a872404f33b04cd237953c5d7498 (patch) | |
| tree | fe5eef605b984025089f157447ff13c61e5fba94 /include/uapi/linux/vhost.h | |
| parent | 3f1b623a1be92103386bcab818e25885d6be9419 (diff) | |
| download | linux-1b48dc03e575a872404f33b04cd237953c5d7498.tar.xz | |
vhost: vdpa: report iova range
This patch introduces a new ioctl for vhost-vdpa device that can
report the iova range by the device.
For device that implements get_iova_range() method, we fetch it from
the vDPA device. If device doesn't implement get_iova_range() but
depends on platform IOMMU, we will query via DOMAIN_ATTR_GEOMETRY,
otherwise [0, ULLONG_MAX] is assumed.
For safety, this patch also rules out the map request which is not in
the valid range.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20201023090043.14430-3-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/uapi/linux/vhost.h')
| -rw-r--r-- | include/uapi/linux/vhost.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index 75232185324a..c998860d7bbc 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -146,4 +146,8 @@ /* Set event fd for config interrupt*/ #define VHOST_VDPA_SET_CONFIG_CALL _IOW(VHOST_VIRTIO, 0x77, int) + +/* Get the valid iova range */ +#define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, \ + struct vhost_vdpa_iova_range) #endif |