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Revert "drm/i915: Don't use BAR mappings for ring buffers with LLC"

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This reverts commit 4eb6789f9177a5fdb90e1b7cdd4b069d1fb9ce45 which is
commit 85636167e3 upstream.

It has been reported to cause problems on Alpine Linux and Manjaro Linux
5.15-based releases, so revert it for now until it can be sorted out.

Reported-by: "A.P. Jo." <apjo@tuta.io>
Link: https://lore.kernel.org/r/NQJqG8n--3-9@tuta.io
Link: https://gitlab.alpinelinux.org/alpine/aports/-/issues/14704
Reported-by: Philip Müller <philm@manjaro.org>
Link: https://lore.kernel.org/r/d955327b-cb1c-4646-76b9-b0499c0c64c6@manjaro.org
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/8284
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.9+
Cc: Jouni Högander <jouni.hogander@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-03-12 12:26:56 +01:00 • committed by Justin Hammond
parent 6367f39026
commit 366826a5f1
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/gpu/drm/i915/gt/intel_ring.c
View file

@ -51,7 +51,7 @@ int intel_ring_pin(struct intel_ring *ring, struct i915_gem_ww_ctx *ww)
if (unlikely(ret))
goto err_unpin;
if (i915_vma_is_map_and_fenceable(vma) && !HAS_LLC(vma->vm->i915)) {
if (i915_vma_is_map_and_fenceable(vma)) {
addr = (void __force *)i915_vma_pin_iomap(vma);
} else {
int type = i915_coherent_map_type(vma->vm->i915, vma->obj, false);
@ -96,7 +96,7 @@ void intel_ring_unpin(struct intel_ring *ring)
return;
i915_vma_unset_ggtt_write(vma);
if (i915_vma_is_map_and_fenceable(vma) && !HAS_LLC(vma->vm->i915))
if (i915_vma_is_map_and_fenceable(vma))
i915_vma_unpin_iomap(vma);
else
i915_gem_object_unpin_map(vma->obj);