vhost: vdpa: Provide custom set_vring_addr() implementation
Unlike other vhost backends (e.g. vhost-net and vhost-vsock), vDPA
backends can not work with host virtual address (HVA), instead they
expect I/O virtual address (IOVA). The IOVA can be mapped 1:1 with
guest physical address (GPA) when no IOMMU is involved. This is why
the default implementation of `set_vring_addr()` from Trait
`VhostBackend` is no longer working with vDPA backends. To solve this
issue, this patch provides a custom `set_vring_addr()` implementation
for Trait `VhostKernVdpa`.
Fixes: #164
Signed-off-by: Bo Chen <[email protected]>
2 files changed
