linux-kernel - Re: [PATCH v2 0/3] iommu/arm-smmu: introduction of ACTLR implementation for Qualcomm SoCs

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Date:   Tue, 14 Nov 2023 16:06:16 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Bibek Kumar Patro <quic_bibekkum@...cinc.com>
Cc:     will@...nel.org, robin.murphy@....com, joro@...tes.org,
        a39.skl@...il.com, konrad.dybcio@...aro.org,
        quic_pkondeti@...cinc.com, quic_molvera@...cinc.com,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org, qipl.kernel.upstream@...cinc.com
Subject: Re: [PATCH v2 0/3] iommu/arm-smmu: introduction of ACTLR
 implementation for Qualcomm SoCs

On Tue, 14 Nov 2023 at 15:57, Bibek Kumar Patro
<quic_bibekkum@...cinc.com> wrote:
>
> This patch series consists of three parts and covers the following:
>
> 1. Introducing intital set of driver changes to implement ACTLR register
>    for custom prefetcher settings in Qualcomm SoCs.
>
> 2. Adding ACTLR data and implementation operations for SM8550.
>
> 3. Re-enabling context caching for Qualcomm SoCs to retain prefetcher
>    settings during reset and runtime suspend.
>
> Changes in v2 from v1:
>  - Incorporated suggestions on v1 from Dmitry,Konrad,Pratyush.

Which suggestions? This doesn't tell anything.

>  - Added defines for ACTLR values.
>  - Linked sm8550 implementation structure to corresponding
>    compatible string.
>  - Repackaged actlr value set implementation to separate function.
>  - Fixed indentation errors.
>  - Link to v1: https://lore.kernel.org/all/20231103215124.1095-1-quic_bibekkum@quicinc.com/
>
> Changes in v1 from RFC:
>  - Incorporated suggestion form Robin on RFC.
>  - Moved the actlr data table into driver, instead of maintaining
>    it inside soc specific DT and piggybacking on exisiting iommus
>    property (iommu = <SID, MASK, ACTLR>) to set this value during
>    smmu probe.
>  - Link to RFC: //lore.kernel.org/all/a01e7e60-6ead-4a9e-ba90-22a8a6bbd03f@...cinc.com/
>
> Bibek Kumar Patro (3):
>   iommu/arm-smmu: introduction of ACTLR for custom prefetcher settings
>   iommu/arm-smmu: add ACTLR data and support for SM8550
>   iommu/arm-smmu: re-enable context caching in smmu reset operation
>
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 156 ++++++++++++++++++++-
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h |   2 +
>  drivers/iommu/arm/arm-smmu/arm-smmu.c      |   5 +-
>  drivers/iommu/arm/arm-smmu/arm-smmu.h      |   5 +
>  4 files changed, 159 insertions(+), 9 deletions(-)
>
> --
> 2.17.1
>


-- 
With best wishes
Dmitry