From: Jordan Crouse <jcrouse@codeaurora.org>
To: freedreno@lists.freedesktop.org
Cc: Rob Herring <robh@kernel.org>,
jean-philippe.brucker@arm.com, linux-arm-msm@vger.kernel.org,
Robin Murphy <robin.murphy@arm.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
dianders@chromimum.org, hoegsberg@google.com,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/3] iommu/arm-smmu: Split pagetable support
Date: Mon, 8 Jul 2019 12:10:15 -0600 [thread overview]
Message-ID: <1562609418-25446-1-git-send-email-jcrouse@codeaurora.org> (raw)
This series implements split pagetable support for arm-smmu-v2 devices. You have
seen this code before as part of [1] but I split it from the other features
to make it easier to review / merge.
This series adds a new format type to io-pgtable-arm to enable TTBR0 and
TTBR1. Because of the way that the registers are mixed up it makes the most
sense to enable them together instead of trying to create two different
pagetables and merge them together later in the arm-smmu drive.
This will be used later by the drm/msm driver to enable split pagetables
as part of the effort to implement per-context pagetables [2].
Thanks,
Jordan
[1] https://patchwork.freedesktop.org/series/57441/
[2] https://patchwork.freedesktop.org/patch/307616/?series=57441&rev=3
Jordan Crouse (3):
iommu: Add DOMAIN_ATTR_SPLIT_TABLES
iommu/io-pgtable-arm: Add support for AARCH64 split pagetables
iommu/arm-smmu: Add support for DOMAIN_ATTR_SPLIT_TABLES
drivers/iommu/arm-smmu.c | 16 ++-
drivers/iommu/io-pgtable-arm.c | 261 +++++++++++++++++++++++++++++++++++++----
drivers/iommu/io-pgtable.c | 1 +
include/linux/io-pgtable.h | 2 +
include/linux/iommu.h | 1 +
5 files changed, 256 insertions(+), 25 deletions(-)
--
2.7.4
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next reply other threads:[~2019-07-08 18:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-08 18:10 Jordan Crouse [this message]
2019-07-08 18:10 ` [PATCH v2 1/3] iommu: Add DOMAIN_ATTR_SPLIT_TABLES Jordan Crouse
2019-07-08 18:10 ` [PATCH v2 2/3] iommu/io-pgtable-arm: Add support for AARCH64 split pagetables Jordan Crouse
2019-07-08 18:10 ` [PATCH v2 3/3] iommu/arm-smmu: Add support for DOMAIN_ATTR_SPLIT_TABLES Jordan Crouse
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