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From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	iommu@lists.linux-foundation.org, joro@8bytes.org,
	bhelgaas@google.com
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
	ashok.raj@intel.com, will@kernel.org, alex.williamson@redhat.com,
	robin.murphy@arm.com, dwmw2@infradead.org
Subject: [PATCH 0/4] PCI, iommu: Factor 'untrusted' check for ATS enablement
Date: Fri, 15 May 2020 12:43:58 +0200
Message-ID: <20200515104359.1178606-1-jean-philippe@linaro.org> (raw)

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@linaro.org/
[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

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Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-15 10:43 Jean-Philippe Brucker [this message]
2020-05-15 10:43 ` [PATCH 1/4] PCI/ATS: Only enable ATS for trusted devices Jean-Philippe Brucker
2020-05-15 11:57   ` Joerg Roedel
2020-05-15 21:18   ` Bjorn Helgaas
2020-05-15 10:44 ` [PATCH 2/4] iommu/amd: Use pci_ats_supported() Jean-Philippe Brucker
2020-05-15 12:01   ` Joerg Roedel
2020-05-15 12:11     ` Jean-Philippe Brucker
2020-05-15 12:21       ` Joerg Roedel
2020-05-15 10:44 ` [PATCH 3/4] iommu/arm-smmu-v3: " Jean-Philippe Brucker
2020-05-18 15:37   ` Will Deacon
2020-05-15 10:44 ` [PATCH 4/4] iommu/vt-d: " Jean-Philippe Brucker
2020-05-15 15:43 ` [PATCH 0/4] PCI, iommu: Factor 'untrusted' check for ATS enablement Christoph Hellwig
2020-05-15 17:19   ` Raj, Ashok
2020-05-15 17:21     ` Will Deacon
2020-05-18 15:47     ` David Woodhouse
2020-05-18 16:29       ` Raj, Ashok
2020-05-18 16:36   ` Jean-Philippe Brucker

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