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vm-virtio: Trigger external map/unmap from virtio-iommu

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This patch relies on the trait implementation provided for each device
which requires some sort of external update based on a map or unmap.

Whenever a MAP or UNMAP request comes through the virtqueues, it
triggers a call to the external mapping trait with map()/unmap()
functions being invoked.

Those external mappings are meant to be used from VFIO and vhost-user
devices as they need to update their own mappings. In case of VFIO, the
goal is to update the DMAR table in the physical IOMMU, while vhost-user
devices needs to update their internal representation of the virtqueues.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2019-10-07 17:12:11 -07:00
committed by Samuel Ortiz
parent 837bcbc6ba
commit c65ead5de8
3 changed files with 71 additions and 7 deletions
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Cargo.lock generated
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@@ -1054,6 +1054,7 @@ dependencies = [
"vhost_rs 0.1.0",
"virtio-bindings 0.1.0 (git+https://github.com/rust-vmm/virtio-bindings)",
"vm-allocator 0.1.0",
"vm-device 0.1.0",
"vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
"vmm-sys-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
]