Messages in this thread | | | From | sathyanarayanan.kuppuswamy@linux ... | Subject | [PATCH v1 0/2] Add page alignment check in Intel IOMMU. | Date | Thu, 7 Feb 2019 10:41:12 -0800 |
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From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
As per Intel vt-d specification, Rev 3.0 (section 7.5.1.1, title "Page Request Descriptor"), Intel IOMMU page request descriptor only uses bits[63:12] of the page address. Hence its required to enforce that the device will only send page request with page-aligned address. So, this patch set adds support to verify whether the device uses page aligned address before enabling the ATS service in Intel IOMMU driver.
Kuppuswamy Sathyanarayanan (2): PCI: ATS: Add function to check ATS page aligned request status. iommu/vt-d: Enable ATS only if the device uses page aligned address.
drivers/iommu/intel-iommu.c | 1 + drivers/pci/ats.c | 22 ++++++++++++++++++++++ include/linux/pci.h | 2 ++ include/uapi/linux/pci_regs.h | 1 + 4 files changed, 26 insertions(+)
-- 2.20.1
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