mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-02 16:44:10 +08:00
6f5312f801
In order to support running vdpa using vritio_vdpa driver, we need to create a different kind of MR, one that has 1:1 mapping, since the addresses referring to virtqueues are dma addresses. We create the 1:1 MR in mlx5_vdpa_dev_add() only in case firmware supports the general capability umem_uid_0. The reason for that is that 1:1 MRs must be created with uid == 0 while virtqueue objects can be created with uid == 0 only when the firmware capability is on. If the set_map() callback is called with new translations provided through iotlb, the driver will destroy the 1:1 MR and create a regular one. Signed-off-by: Eli Cohen <elic@nvidia.com> Link: https://lore.kernel.org/r/20210602085854.62690-1-elic@nvidia.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> |
||
|---|---|---|
| .. | ||
| ifcvf | ||
| mlx5 | ||
| vdpa_sim | ||
| virtio_pci | ||
| Kconfig | ||
| Makefile | ||
| vdpa.c | ||