On 2024/5/30 20:24, CLEMENT MATHIEU--DRIF wrote:
This series belongs to a list of series that add SVM support for VT-d.Here we focus on the implementation of PRI support in the IOMMU and on a PCI-level API for PRI to be used by virtual devices. This work is based on the VT-d specification version 4.1 (March 2023). Here is a link to a GitHub repository where you can find the following elements : - Qemu with all the patches for SVM - ATS - PRI - Device IOTLB invalidations - Requests with already translated addresses - A demo device - A simple driver for the demo device - A userspace program (for testing and demonstration purposes)
I didn't see the drain PRQ related logics in this series. Please consider adding it in next version. It's needed when repurposing a PASID.
https://github.com/BullSequana/Qemu-in-guest-SVM-demo Clément Mathieu--Drif (8): pcie: add a helper to declare the PRI capability for a pcie device pcie: helper functions to check to check if PRI is enabled pcie: add a way to get the outstanding page request allocation (pri) from the config space. pci: declare structures and IOMMU operation for PRI pci: add a PCI-level API for PRI intel_iommu: declare PRI constants and structures intel_iommu: declare registers for PRI intel_iommu: add PRI operations support hw/i386/intel_iommu.c | 302 +++++++++++++++++++++++++++++++++ hw/i386/intel_iommu_internal.h | 54 +++++- hw/pci/pci.c | 37 ++++ hw/pci/pcie.c | 42 +++++ include/exec/memory.h | 65 +++++++ include/hw/pci/pci.h | 45 +++++ include/hw/pci/pci_bus.h | 1 + include/hw/pci/pcie.h | 7 +- include/hw/pci/pcie_regs.h | 4 + system/memory.c | 49 ++++++ 10 files changed, 604 insertions(+), 2 deletions(-)
-- Regards, Yi Liu
