Sebastien Boeuf a6040d7a30 vmm: Create a single VFIO container ... For most use cases, there is no need to create multiple VFIO containers as it causes unwanted behaviors. Especially when passing multiple devices from the same IOMMU group, we need to use the same container so that it can properly list the groups that have been already opened. The correct logic was already there in vfio-ioctls, but it was incorrectly used from our VMM implementation. For the special case where we put a VFIO device behind a vIOMMU, we must create one container per device, as we need to control the DMA mappings per device, which is performed at the container level. Because we must keep one container per device, the vIOMMU use case prevents multiple devices attached to the same IOMMU group to be passed through the VM. But this is a limitation that we are fine with, especially since the vIOMMU doesn't let us group multiple devices in the same group from a guest perspective. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>		2021-09-15 09:08:13 -07:00
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src	vmm: Create a single VFIO container	2021-09-15 09:08:13 -07:00
Cargo.toml	build: bump serde_json from 1.0.67 to 1.0.68	2021-09-15 00:06:23 +00:00