On 05/07/2024 05:03, Yi Liu wrote: > Caution: External email. Do not open attachments or click links, > unless this email comes from a known sender and you know the content > is safe. > > > 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.
Hi, Are you talking about wait descriptors with SW = 0, IF = 0, FN = 1 (section 7.10 of VT-d)? I'll move that to the PRI series. > >> 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
