Hi Mostafa, On 29/04/2024 04:23, Mostafa Saleh wrote:
Future improvements: ===================== 1) One small improvement, that I don’t think it’s worth the extra complexity, is in case of Stage-1 TLB miss for nested translation, we can do stage-1 walk and lookup for stage-2 TLBs, instead of doing the full walk.Testing ======== 1) IOMMUFD + VFIO Kernel: https://lore.kernel.org/all/cover.1683688960.git.nicol...@nvidia.com/ VMM: https://qemu-devel.nongnu.narkive.com/o815DqpI/rfc-v5-0-8-arm-smmuv3-emulation-support By assigning “virtio-net-pci,netdev=net0,disable-legacy=on,iommu_platform=on,ats=on”, to a guest VM (on top of QEMU guest) with VIFO and IOMMUFD. 2) Work in progress prototype I am hacking on for nesting on KVM (this is nowhere near complete, and misses many stuff but it doesn't require VMs/VFIO) also with virtio-net-pci and git cloning a bunch of stuff and also observing traces. https://android-kvm.googlesource.com/linux/+log/refs/heads/smostafa/android15-6.6-smmu-nesting-wip I also modified the Linux driver to test with mixed granules/levels.
We have tested the series as well: Tested-by: Julien Grall <jgr...@amazon.co.uk> Cheers, -- Julien Grall
