diff options
| author | Xie Yongji <xieyongji@bytedance.com> | 2021-08-31 18:36:31 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-06 07:20:57 -0400 |
| commit | d8945ec411209272bcd4ae9e75ea1b078257e492 (patch) | |
| tree | ddee9fc4da7335ccdf380c4799b380207d47007f /fs/read_write.c | |
| parent | 22af48cf91aae5f2fd32fe811d9be1c52d7a801b (diff) | |
vdpa: Support transferring virtual addressing during DMA mapping
This patch introduces an attribute for vDPA device to indicate
whether virtual address can be used. If vDPA device driver set
it, vhost-vdpa bus driver will not pin user page and transfer
userspace virtual address instead of physical address during
DMA mapping. And corresponding vma->vm_file and offset will be
also passed as an opaque pointer.
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210831103634.33-11-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'fs/read_write.c')
0 files changed, 0 insertions, 0 deletions