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Open Source and information security mailing list archives
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Date: Sun, 5 Jun 2022 23:19:22 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: <jgg@...dia.com>, <joro@...tes.org>, <will@...nel.org>,
<marcan@...can.st>, <sven@...npeter.dev>, <robin.murphy@....com>,
<robdclark@...il.com>, <m.szyprowski@...sung.com>,
<krzysztof.kozlowski@...aro.org>, <baolu.lu@...ux.intel.com>,
<agross@...nel.org>, <bjorn.andersson@...aro.org>,
<matthias.bgg@...il.com>, <heiko@...ech.de>, <orsonzhai@...il.com>,
<baolin.wang7@...il.com>, <zhang.lyra@...il.com>, <wens@...e.org>,
<jernej.skrabec@...il.com>, <samuel@...lland.org>,
<jean-philippe@...aro.org>, <alex.williamson@...hat.com>
CC: <suravee.suthikulpanit@....com>, <alyssa@...enzweig.io>,
<alim.akhtar@...sung.com>, <dwmw2@...radead.org>,
<yong.wu@...iatek.com>, <mjrosato@...ux.ibm.com>,
<gerald.schaefer@...ux.ibm.com>, <thierry.reding@...il.com>,
<vdumpa@...dia.com>, <jonathanh@...dia.com>, <cohuck@...hat.com>,
<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-arm-msm@...r.kernel.org>,
<linux-samsung-soc@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-rockchip@...ts.infradead.org>, <linux-s390@...r.kernel.org>,
<linux-sunxi@...ts.linux.dev>, <linux-tegra@...r.kernel.org>,
<virtualization@...ts.linux-foundation.org>, <kvm@...r.kernel.org>
Subject: [PATCH 0/5] Simplify vfio_iommu_type1 attach/detach routine
This is a preparatory series for IOMMUFD v2 patches. It enforces error
code -EMEDIUMTYPE in iommu_attach_device() and iommu_attach_group() when
an IOMMU domain and a device/group are incompatible. It also moves the
domain->ops check into __iommu_attach_device(). These allow VFIO iommu
code to simplify its group attachment routine, by avoiding the extra
IOMMU domain allocations and attach/detach sequences of the old code.
Worths mentioning the exact match for enforce_cache_coherency is removed
with this series, since there's very less value in doing that since KVM
won't be able to take advantage of it -- this just wastes domain memory.
Instead, we rely on Intel IOMMU driver taking care of that internally.
This is on github: https://github.com/nicolinc/iommufd/commits/vfio_iommu_attach
Jason Gunthorpe (1):
vfio/iommu_type1: Prefer to reuse domains vs match enforced cache
coherency
Nicolin Chen (4):
iommu: Return -EMEDIUMTYPE for incompatible domain and device/group
iommu: Ensure device has the same iommu_ops as the domain
vfio/iommu_type1: Clean up update_dirty_scope in detach_group()
vfio/iommu_type1: Simplify group attachment
drivers/iommu/amd/iommu.c | 3 +-
drivers/iommu/apple-dart.c | 5 +-
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 7 +-
drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 +
drivers/iommu/arm/arm-smmu/qcom_iommu.c | 3 +-
drivers/iommu/exynos-iommu.c | 1 +
drivers/iommu/fsl_pamu_domain.c | 1 +
drivers/iommu/intel/iommu.c | 5 +-
drivers/iommu/iommu.c | 26 ++
drivers/iommu/ipmmu-vmsa.c | 3 +-
drivers/iommu/msm_iommu.c | 1 +
drivers/iommu/mtk_iommu.c | 1 +
drivers/iommu/mtk_iommu_v1.c | 1 +
drivers/iommu/omap-iommu.c | 3 +-
drivers/iommu/rockchip-iommu.c | 1 +
drivers/iommu/s390-iommu.c | 1 +
drivers/iommu/sprd-iommu.c | 1 +
drivers/iommu/sun50i-iommu.c | 1 +
drivers/iommu/tegra-gart.c | 1 +
drivers/iommu/tegra-smmu.c | 1 +
drivers/iommu/virtio-iommu.c | 3 +-
drivers/vfio/vfio_iommu_type1.c | 315 ++++++++++----------
include/linux/iommu.h | 2 +
23 files changed, 223 insertions(+), 164 deletions(-)
--
2.17.1
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