linux-kernel - Re: [PATCH v18 0/5] iommu/arm-smmu: introduction of ACTLR implementation for Qualcomm SoCs

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Message-ID: <CAF6AEGtrUKybxPZMxkUgjg8JCxPr7-pRe0noS7=y6UrbHxDzZw@mail.gmail.com>
Date: Wed, 12 Mar 2025 08:37:28 -0700
From: Rob Clark <robdclark@...il.com>
To: Will Deacon <will@...nel.org>
Cc: robin.murphy@....com, joro@...tes.org, jgg@...pe.ca, jsnitsel@...hat.com, 
	robh@...nel.org, krzysztof.kozlowski@...aro.org, quic_c_gdjako@...cinc.com, 
	dmitry.baryshkov@...aro.org, Bibek Kumar Patro <quic_bibekkum@...cinc.com>, 
	catalin.marinas@....com, kernel-team@...roid.com, iommu@...ts.linux.dev, 
	linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v18 0/5] iommu/arm-smmu: introduction of ACTLR
 implementation for Qualcomm SoCs

On Wed, Mar 12, 2025 at 6:08 AM Will Deacon <will@...nel.org> wrote:
>
> On Tue, Mar 11, 2025 at 01:03:29PM -0700, Rob Clark wrote:
> > On Tue, Mar 11, 2025 at 10:55 AM Will Deacon <will@...nel.org> wrote:
> > >
> > > On Tue, Jan 07, 2025 at 04:42:39PM +0000, Will Deacon wrote:
> > > > On Thu, 12 Dec 2024 20:43:57 +0530, Bibek Kumar Patro wrote:
> > > > > This patch series consist of six parts and covers the following:
> > > > >
> > > > > 1. Provide option to re-enable context caching to retain prefetcher
> > > > >    settings during reset and runtime suspend.
> > > > >
> > > > > 2. Remove cfg inside qcom_smmu structure and replace it with single
> > > > >    pointer to qcom_smmu_match_data avoiding replication of multiple
> > > > >    members from same.
> > > > >
> > > > > [...]
> > > >
> > > > Applied to iommu (arm/smmu/updates), thanks!
> > > >
> > > > [1/5] iommu/arm-smmu: Re-enable context caching in smmu reset operation
> > > >       https://git.kernel.org/iommu/c/ef4144b1b47d
> > > > [2/5] iommu/arm-smmu: Refactor qcom_smmu structure to include single pointer
> > > >       https://git.kernel.org/iommu/c/445d7a8ed90e
> > > > [3/5] iommu/arm-smmu: Add support for PRR bit setup
> > > >       https://git.kernel.org/iommu/c/7f2ef1bfc758
> > > > [4/5] iommu/arm-smmu: Introduce ACTLR custom prefetcher settings
> > > >       https://git.kernel.org/iommu/c/9fe18d825a58
> > > > [5/5] iommu/arm-smmu: Add ACTLR data and support for qcom_smmu_500
> > > >       https://git.kernel.org/iommu/c/3e35c3e725de
> > >
> > > Hrm. I'm not seeing any user of the new ->set_prr*_() functions in
> > > linux-next yet. Is there something under review, or should I revert this
> > > for now?
> >
> > It is WIP, part of a larger patchset adding sparse binding support in
> > drm/msm.  Please do not revert.
>
> Sure, if it's actively being worked on then I'll leave the hooks in
> place.
>
> Do you have a link to the patchset so that I can follow along, please?
>
> Will

https://patchwork.freedesktop.org/series/142263/

I'm currently working on resolving the shrinker hack, which is the
remaining TODO.  So I'll hopefully be able to drop the RFC tag and
post a new version in a couple of weeks.

BR,
-R