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Subject: Re: [PATCH v5 0/3] iommu/arm-smmu-qcom: Support maintaining
 bootloader mappings
To:     Bjorn Andersson <bjorn.andersson@linaro.org>,
        Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Joerg Roedel <joro@8bytes.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
        Jordan Crouse <jcrouse@codeaurora.org>,
        Thierry Reding <treding@nvidia.com>,
        Rob Clark <robdclark@chromium.org>
Cc:     linux-arm-kernel@lists.infradead.org,
        iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org
References: <20201019182323.3162386-1-bjorn.andersson@linaro.org>
From:   Steev Klimaszewski <steev@kali.org>
Message-ID: <fc462189-d5de-bb8d-31b5-6fb87a6edbdb@kali.org>
Date:   Thu, 22 Oct 2020 12:14:38 -0500
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On 10/19/20 1:23 PM, Bjorn Andersson wrote:
> This is the revised fourth attempt of inheriting the stream mapping for
> the framebuffer on many Qualcomm platforms, in order to not hit
> catastrophic faults during arm-smmu initialization.
>
> The new approach does, based on Robin's suggestion, take a much more
> direct approach with the allocation of a context bank for bypass
> emulation and use of this context bank pretty much isolated to the
> Qualcomm specific implementation.
>
> The patchset has been tested to boot DB845c and RB5 (with splash screen)
> and Lenovo Yoga C630 (with EFI framebuffer).
>
> Bjorn Andersson (3):
>   iommu/arm-smmu: Allow implementation specific write_s2cr
>   iommu/arm-smmu-qcom: Read back stream mappings
>   iommu/arm-smmu-qcom: Implement S2CR quirk
>
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 90 ++++++++++++++++++++++
>  drivers/iommu/arm/arm-smmu/arm-smmu.c      | 13 +++-
>  drivers/iommu/arm/arm-smmu/arm-smmu.h      |  1 +
>  3 files changed, 101 insertions(+), 3 deletions(-)
>
Tested series here on my Lenovo C630.

Tested-by: Steev Klimaszewski <steev@kali.org>