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...| --- |0|0|<--- context 1 > | pgd |0|1| > | --- |0|0| > | --- |0|0| > +---------------------+ > | \___Entry is valid > |______reserved > > Question: do we want per-context page table format, or can it stay global > for the whole indirect table? Are you defining this context table format in software, or following hardware definition? At least for VT-d...

...| --- |0|0|<--- context 1 > | pgd |0|1| > | --- |0|0| > | --- |0|0| > +---------------------+ > | \___Entry is valid > |______reserved > > Question: do we want per-context page table format, or can it stay global > for the whole indirect table? Are you defining this context table format in software, or following hardware definition? At least for VT-d...

...ontext 0 | --- |0|0|<--- context 1 | pgd |0|1| | --- |0|0| | --- |0|0| +---------------------+ | \___Entry is valid |______reserved Question: do we want per-context page table format, or can it stay global for the whole indirect table? Having a context table allows to provide multiple address spaces for a single device. In the simplest form, without F_INDIRECT...

This is the initial proposal for a paravirtualized IOMMU device using virtio transport. It contains a description of the device, a Linux driver, and a toy implementation in kvmtool. With this prototype, you can translate DMA to guest memory from emulated (virtio), or passed-through (VFIO) devices. In its simplest form, implemented here, the device handles map/unmap requests from the guest. Future

This is the initial proposal for a paravirtualized IOMMU device using virtio transport. It contains a description of the device, a Linux driver, and a toy implementation in kvmtool. With this prototype, you can translate DMA to guest memory from emulated (virtio), or passed-through (VFIO) devices. In its simplest form, implemented here, the device handles map/unmap requests from the guest. Future