linux-kernel - Re: [PATCHv9 2/8] iommu/arm-smmu: Add domain attribute for pagetable configuration

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Message-ID: <b56ec844e2c059d0c6d8de3424a0cce7@codeaurora.org>
Date:   Wed, 25 Nov 2020 12:28:18 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Will Deacon <will@...nel.org>
Cc:     Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Rob Clark <robdclark@...il.com>,
        Akhil P Oommen <akhilpo@...eaurora.org>,
        freedreno@...ts.freedesktop.org,
        "Kristian H . Kristensen" <hoegsberg@...gle.com>,
        dri-devel@...ts.freedesktop.org, iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCHv9 2/8] iommu/arm-smmu: Add domain attribute for pagetable
 configuration

On 2020-11-25 03:11, Will Deacon wrote:
> On Mon, Nov 23, 2020 at 10:35:55PM +0530, Sai Prakash Ranjan wrote:
>> Add iommu domain attribute for pagetable configuration which
>> initially will be used to set quirks like for system cache aka
>> last level cache to be used by client drivers like GPU to set
>> right attributes for caching the hardware pagetables into the
>> system cache and later can be extended to include other page
>> table configuration data.
>> 
>> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
>> ---
>>  drivers/iommu/arm/arm-smmu/arm-smmu.c | 20 ++++++++++++++++++++
>>  drivers/iommu/arm/arm-smmu/arm-smmu.h |  1 +
>>  include/linux/io-pgtable.h            |  4 ++++
>>  include/linux/iommu.h                 |  1 +
>>  4 files changed, 26 insertions(+)
> 
> Given that we're heading for a v10 to address my comments on patch 3,
> then I guess you may as well split this into two patches so that I can
> share just the atttibute with Rob rather than the driver parts.
> 
> Please keep it all as one series though, with the common parts at the
> beginning, and I'll figure it out.
> 

Ok I will split up and send v10.

Thanks,
Sai

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