Ah, this is a duplicate effort on stage-1 translation. Hi Clement,
We had ever sent a rfcv1 series "intel_iommu: Enable stage-1 translation" for both emulated and passthrough device, link: https://lists.gnu.org/archive/html/qemu-devel/2024-01/msg02740.html which now evolves to rfcv2, link: https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_nesting_rfcv2/ It had addressed recent community comments, also the comments in old history series: https://patchwork.kernel.org/project/kvm/cover/20210302203827.437645-1-yi.l....@intel.com/ Would you mind rebasing your remaining part, i.e., ATS, PRI emulation, etc on to our rfcv2? Thanks Zhenzhong >-----Original Message----- >From: Cédric Le Goater <c...@redhat.com> >Subject: Re: [PATCH intel_iommu 0/7] FLTS for VT-d > >Hello, > >Adding a few people in Cc: who are familiar with the Intel IOMMU. > >Thanks, > >C. > > > > >On 4/22/24 17:52, CLEMENT MATHIEU--DRIF wrote: >> This series is the first of a list that add support for SVM in the Intel >> IOMMU. >> >> Here, we implement support for first-stage translation in VT-d. >> The PASID-based IOTLB invalidation is also added in this series as it is a >> requirement of FLTS. >> >> The last patch introduces the 'flts' option to enable the feature from >> the command line. >> Once enabled, several drivers of the Linux kernel use this feature. >> >> 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 >> - PASID based IOTLB invalidation >> - Device IOTLB invalidations >> - First-stage translations >> - Requests with already translated addresses >> - A demo device >> - A simple driver for the demo device >> - A userspace program (for testing and demonstration purposes) >> >> https://github.com/BullSequana/Qemu-in-guest-SVM-demo >> >> Clément Mathieu--Drif (7): >> intel_iommu: fix FRCD construction macro. >> intel_iommu: rename slpte to pte before adding FLTS >> intel_iommu: make types match >> intel_iommu: add support for first-stage translation >> intel_iommu: extract device IOTLB invalidation logic >> intel_iommu: add PASID-based IOTLB invalidation >> intel_iommu: add a CLI option to enable FLTS >> >> hw/i386/intel_iommu.c | 655 ++++++++++++++++++++++++++------ >- >> hw/i386/intel_iommu_internal.h | 114 ++++-- >> include/hw/i386/intel_iommu.h | 3 +- >> 3 files changed, 609 insertions(+), 163 deletions(-) >>
