linux-kernel - [PATCH 0/5] drm/msm+iommu/arm-smmu-qcom: tlbinv optimizations

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Message-Id: <20220821181917.1188021-1-robdclark@gmail.com>
Date:   Sun, 21 Aug 2022 11:19:01 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        Rob Clark <robdclark@...omium.org>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Chia-I Wu <olvaffe@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        iommu@...ts.linux.dev (open list:IOMMU DRIVERS),
        iommu@...ts.linux-foundation.org (open list:IOMMU DRIVERS),
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM SMMU DRIVERS),
        linux-kernel@...r.kernel.org (open list),
        Loic Poulain <loic.poulain@...aro.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Robin Murphy <robin.murphy@....com>,
        Sean Paul <sean@...rly.run>,
        Sibi Sankar <sibis@...eaurora.org>,
        Vinod Koul <vkoul@...nel.org>, Will Deacon <will@...nel.org>,
        Yang Yingliang <yangyingliang@...wei.com>
Subject: [PATCH 0/5] drm/msm+iommu/arm-smmu-qcom: tlbinv optimizations

From: Rob Clark <robdclark@...omium.org>

Two additions to adreno_smmu_priv to allow for a couple of
optimizations:

 + Use a separate ASID for each set of pgtables to avoid
   over-invalidation.
 + Detect the case of unmapping from non-current pgtables
   where we can skip the redundant tlbinv

Rob Clark (5):
  iommu/arm-smmu-qcom: Fix indentation
  iommu/arm-smmu-qcom: Provide way to access current TTBR0
  iommu/arm-smmu-qcom: Add private interface to tlbinv by ASID
  drm/msm: Use separate ASID for each set of pgtables
  drm/msm: Skip tlbinv on unmap from non-current pgtables

 drivers/gpu/drm/msm/adreno/a6xx_gpu.c      |  6 +++
 drivers/gpu/drm/msm/msm_iommu.c            | 44 +++++++++++++++++++---
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 10 +++++
 drivers/iommu/arm/arm-smmu/arm-smmu.c      | 43 +++++++++++++++++++--
 drivers/iommu/arm/arm-smmu/arm-smmu.h      |  1 +
 include/linux/adreno-smmu-priv.h           | 18 +++++----
 6 files changed, 106 insertions(+), 16 deletions(-)

-- 
2.37.2