linux-kernel - Re: [PATCH v3 0/8] iommu/arm-smmu: Support maintaining bootloader mappings

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Date:   Sat, 5 Sep 2020 15:27:14 -0700
From:   Rob Clark <robdclark@...il.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Rob Clark <robdclark@...omium.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "list@....net:IOMMU DRIVERS <iommu@...ts.linux-foundation.org>, Joerg
        Roedel <joro@...tes.org>," <iommu@...ts.linux-foundation.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/8] iommu/arm-smmu: Support maintaining bootloader mappings

On Fri, Sep 4, 2020 at 8:55 AM Bjorn Andersson
<bjorn.andersson@...aro.org> wrote:
>
> Based on previous attempts and discussions this is the latest attempt at
> inheriting stream mappings set up by the bootloader, for e.g. boot splash or
> efifb.
>
> Per Will's request this builds on the work by Jordan and Rob for the Adreno
> SMMU support. It applies cleanly ontop of v16 of their series, which can be
> found at
> https://lore.kernel.org/linux-arm-msm/20200901164707.2645413-1-robdclark@gmail.com/
>
> Bjorn Andersson (8):
>   iommu/arm-smmu: Refactor context bank allocation
>   iommu/arm-smmu: Delay modifying domain during init
>   iommu/arm-smmu: Consult context bank allocator for identify domains
>   iommu/arm-smmu-qcom: Emulate bypass by using context banks
>   iommu/arm-smmu-qcom: Consistently initialize stream mappings
>   iommu/arm-smmu: Add impl hook for inherit boot mappings
>   iommu/arm-smmu: Provide helper for allocating identity domain
>   iommu/arm-smmu-qcom: Setup identity domain for boot mappings

I have squashed 1/8 into v17 of the adreno-smmu series as suggested by
Bjorn, the remainder are:

Reviewed-by: Rob Clark <robdclark@...il.com>

and on the lenovo c630,

Tested-by: Rob Clark <robdclark@...il.com>

>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 111 ++++++++++++++++++-
>  drivers/iommu/arm/arm-smmu/arm-smmu.c      | 122 ++++++++++++++-------
>  drivers/iommu/arm/arm-smmu/arm-smmu.h      |  14 ++-
>  3 files changed, 205 insertions(+), 42 deletions(-)
>
> --
> 2.28.0
>
> _______________________________________________
> iommu mailing list
> iommu@...ts.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/iommu

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