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drm/i915: Catch yet another unconditioal clflush

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Replace the unconditional clflush() with drm_clflush_virt_range()
which does the wbinvd() fallback when clflush is not available.

This time no justification is given for the clflush in the
offending commit.

Cc: stable@vger.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Fixes: 2c8ab3339e ("drm/i915: Pin timeline map after first timeline pin, v4.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211014090941.12159-4-ville.syrjala@linux.intel.com
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Ville Syrjälä 2021-10-14 12:09:40 +03:00
parent af7b6d234e
commit 9ced12182d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/gt/intel_timeline.c
View file

@ -64,7 +64,7 @@ intel_timeline_pin_map(struct intel_timeline *timeline)
timeline->hwsp_map = vaddr;
timeline->hwsp_seqno = memset(vaddr + ofs, 0, TIMELINE_SEQNO_BYTES);
clflush(vaddr + ofs);
drm_clflush_virt_range(vaddr + ofs, TIMELINE_SEQNO_BYTES);
return 0;
}