| commit | 90519b90539b16258d1d52b908b199f44877dc18 | |
| author | Zhenzhong Duan <zhenzhong.duan@intel.com> | |
| Mon, 13 Jun 2022 06:10:08 +0000 (13 14:10 +0800) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Thu, 16 Jun 2022 16:54:58 +0000 (16 12:54 -0400) | ||
| tree | 2b362751aa48cad7fcbbe1307b06162824f1f0ee | treesnapshot (tar.gz zip) |
| parent | b595d6272e9219bf70a9baf6d37f64045907f03b | commitdiff |
virtio-iommu: Add bypass mode support to assigned device
Currently assigned devices can not work in virtio-iommu bypass mode.
Guest driver fails to probe the device due to DMA failure. And the
reason is because of lacking GPA -> HPA mappings when VM is created.
Add a root container memory region to hold both bypass memory region
and iommu memory region, so the switch between them is supported
just like the implementation in virtual VT-d.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220613061010.2674054-2-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently assigned devices can not work in virtio-iommu bypass mode.
Guest driver fails to probe the device due to DMA failure. And the
reason is because of lacking GPA -> HPA mappings when VM is created.
Add a root container memory region to hold both bypass memory region
and iommu memory region, so the switch between them is supported
just like the implementation in virtual VT-d.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20220613061010.2674054-2-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/virtio/trace-events | diffblobblamehistory | |
| hw/virtio/virtio-iommu.c | diffblobblamehistory | |
| include/hw/virtio/virtio-iommu.h | diffblobblamehistory |