Re: [PATCH v5 0/3] iommu/arm-smmu-qcom: Support maintaining bootloader mappings

[Steev Klimaszewski]

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@xxxxxxxx>