linux-kernel - [RFC PATCH 00/11] Affirm SMMU coherent pagetable walker capability on RPMh SoCs

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Message-Id: <20240919-topic-apps_smmu_coherent-v1-0-5b3a8662403d@quicinc.com>
Date: Thu, 19 Sep 2024 00:57:13 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, cros-qcom-dts-watchers@...omium.org
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Konrad Dybcio <quic_kdybcio@...cinc.com>
Subject: [RFC PATCH 00/11] Affirm SMMU coherent pagetable walker capability
 on RPMh SoCs

I only read back the SMMU config on X1E & 7280, but I have it on good
authority that this concerns all RPMh SoCs. Sending as RFC just in case.

Lacking coherency can hurt performance, but claiming coherency where it's
absent would lead to a kaboom.

Signed-off-by: Konrad Dybcio <quic_kdybcio@...cinc.com>
---
Konrad Dybcio (11):
      arm64: dts: qcom: qdu1000: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sc7180: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sc8180x: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sc8280xp: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sdm670: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sm6350: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sm8150: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sm8350: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: sm8450: Affirm IDR0.CCTW on apps_smmu
      arm64: dts: qcom: x1e80100: Affirm IDR0.CCTW on apps_smmu

 arch/arm64/boot/dts/qcom/qdu1000.dtsi  | 1 +
 arch/arm64/boot/dts/qcom/sc7180.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/sc8180x.dtsi  | 2 +-
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 1 +
 arch/arm64/boot/dts/qcom/sdm670.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/sdm845.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/sm6350.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/sm8150.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/sm8350.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/sm8450.dtsi   | 1 +
 arch/arm64/boot/dts/qcom/x1e80100.dtsi | 2 ++
 11 files changed, 12 insertions(+), 1 deletion(-)
---
base-commit: 55bcd2e0d04c1171d382badef1def1fd04ef66c5
change-id: 20240919-topic-apps_smmu_coherent-070f38a2c207

Best regards,
-- 
Konrad Dybcio <quic_kdybcio@...cinc.com>