linux-kernel - [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb

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Date:   Thu, 26 Dec 2019 14:17:06 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, Patrick Daly <pdaly@...eaurora.org>,
        Pratik Patel <pratikp@...eaurora.org>,
        Rob Clark <robdclark@...il.com>
Subject: [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb

These patches implements the stream mapping inheritance that's necessary in
order to not hit a security violation as the display hardware looses its stream
mapping during initialization of arm-smmu in various Qualcomm platforms.

This was previously posted as an RFC [1], changes since then involves the
rebase and migration of the read-back code to the Qualcomm specific
implementation, the mapping is maintained indefinitely - to handle probe
deferring clients - and rewritten commit messages.

[1] https://lore.kernel.org/linux-arm-msm/20190605210856.20677-1-bjorn.andersson@linaro.org/

Bjorn Andersson (3):
  iommu/arm-smmu: Don't blindly use first SMR to calculate mask
  iommu/arm-smmu: Expose s2cr and smr structs to impl
  iommu/arm-smmu: Allow inherting stream mapping from bootloader

 drivers/iommu/arm-smmu-qcom.c | 35 ++++++++++++++++++
 drivers/iommu/arm-smmu.c      | 70 +++++++++++++++++++++++------------
 drivers/iommu/arm-smmu.h      | 15 ++++++++
 3 files changed, 96 insertions(+), 24 deletions(-)

-- 
2.24.0