5 ms·
Using IOMMU through the "userspace PCI" vfio driver, as done in pass-through scenarios, is a different path than using it through the DMA API.
by bonzini 8y ago
Using IOMMU through the "userspace PCI" vfio driver, as done in pass-through scenarios, is a different path than using it through the DMA API.
- walterbell 8y agoIOMMU is also exercised by Xen PCI passthrough (e.g. QubesOS network and USB driver VMs) and SR-IOV (e.g. AWS Nitro networking).
- bonzini 8y agoThe problem isn't bugs in the IOMMU, it's bugs or performance issues in using the DMA API with an IOMMU.