✓ CI.checkpatch: success for drm/xe: Add mmio read before GGTT invalidate

Patchwork patchwork at emeril.freedesktop.org
Thu Oct 24 14:45:51 UTC 2024


== Series Details ==

Series: drm/xe: Add mmio read before GGTT invalidate
URL   : https://patchwork.freedesktop.org/series/140400/
State : success

== Summary ==

+ KERNEL=/kernel
+ git clone https://gitlab.freedesktop.org/drm/maintainer-tools mt
Cloning into 'mt'...
warning: redirecting to https://gitlab.freedesktop.org/drm/maintainer-tools.git/
+ git -C mt rev-list -n1 origin/master
30ab6715fc09baee6cc14cb3c89ad8858688d474
+ cd /kernel
+ git config --global --add safe.directory /kernel
+ git log -n1
commit a774e8073a5d926c20936bb4d1a1d7ffdd9d7154
Author: Matthew Brost <matthew.brost at intel.com>
Date:   Wed Oct 23 15:12:00 2024 -0700

    drm/xe: Add mmio read before GGTT invalidate
    
    On LNL without a mmio read before a GGTT invalidate the GuC can
    incorrectly read the GGTT scratch page upon next access leading to jobs
    not getting scheduled. A mmio read before a GGTT invalidate seems to fix
    this. Since a GGTT invalidate is not a hot code path, blindly do a mmio
    read before each GGTT invalidate.
    
    Cc: John Harrison <John.C.Harrison at Intel.com>
    Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
    Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
    Cc: Lucas De Marchi <lucas.demarchi at intel.com>
    Cc: stable at vger.kernel.org
    Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
    Reported-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/3164
    Signed-off-by: Matthew Brost <matthew.brost at intel.com>
+ /mt/dim checkpatch 121cd95da591284c97d6f9ac1c58c7a79d27b201 drm-intel
a774e8073a5d drm/xe: Add mmio read before GGTT invalidate




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