I sent these in March as part of ATS enablement for device-tree [1], but haven't found the time to address the largest comment on that series about consolidating the root bridge ATS support between the different ACPI tables. I'm resending only the bits that consolidate the 'untrusted' check for ATS, since there have been more discussions about this [2]. Patch 1 moves the 'untrusted' check to drivers/pci/ats.c and patches 2-4 modify the ATS-capable IOMMU drivers. The only functional change should be to the AMD IOMMU driver. With this change all IOMMU drivers block 'Translated' PCIe transactions and Translation Requests from untrusted devices. [1] https://lore.kernel.org/linux-iommu/20200311124506.208376-1-jean-philippe@xxxxxxxxxx/ [2] https://lore.kernel.org/linux-pci/20200513151929.GA38418@bjorn-Precision-5520/ Jean-Philippe Brucker (4): PCI/ATS: Only enable ATS for trusted devices iommu/amd: Use pci_ats_supported() iommu/arm-smmu-v3: Use pci_ats_supported() iommu/vt-d: Use pci_ats_supported() include/linux/pci-ats.h | 3 +++ drivers/iommu/amd_iommu.c | 12 ++++-------- drivers/iommu/arm-smmu-v3.c | 20 +++++--------------- drivers/iommu/intel-iommu.c | 9 +++------ drivers/pci/ats.c | 18 +++++++++++++++++- 5 files changed, 32 insertions(+), 30 deletions(-) -- 2.26.2
