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SubjectRe: [PATCH] drm/msm: Fix display fault handling
On Wed, Jul 7, 2021 at 10:57 AM Rob Clark <> wrote:
> From: Rob Clark <>
> It turns out that when the display is enabled by the bootloader, we can
> get some transient iommu faults from the display. Which doesn't go over
> too well when we install a fault handler that is gpu specific. To avoid
> this, defer installing the fault handler until we get around to setting
> up per-process pgtables (which is adreno_smmu specific). The arm-smmu
> fallback error reporting is sufficient for reporting display related
> faults (and in fact was all we had prior to f8f934c180f629bb927a04fd90d)
> Reported-by: Dmitry Baryshkov <>
> Reported-by: Yassine Oudjana <>
> Fixes: 2a574cc05d38 ("drm/msm: Improve the a6xx page fault handler")
> Signed-off-by: Rob Clark <>
> Tested-by: John Stultz <>
> ---

Hey folks!
Just wanted to follow up on this, as it's still missing from
5.14-rc3 and is critical for resolving a boot regression on db845c. Is
there anything keeping this from heading upstream?


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