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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-19 21:12:07 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-19 21:29:29 +0100 |
| commit | 267e80ee6a341bc694406ef7c4f30fa2721610b7 (patch) | |
| tree | aa472f036ce3c9a5e24623f59c7b1cb2af3af896 /drivers/gpu/drm/i915/i915_gem_gtt.c | |
| parent | b972fffa114b18a120a7bbde105d69a080d24970 (diff) | |
| download | talos-op-linux-267e80ee6a341bc694406ef7c4f30fa2721610b7.tar.gz talos-op-linux-267e80ee6a341bc694406ef7c4f30fa2721610b7.zip | |
drm/i915/gtt: Skip clearing the GGTT under gen6+ full-ppgtt
If we know that the user cannot access the GGTT, by virtue of having a
segregated memory area, we can skip clearing the unused entries as they
cannot be accessed.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190419201207.5477-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 8f460cc4cc1f..10558bc8bf90 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -3280,7 +3280,9 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt) size = gen6_get_total_gtt_size(snb_gmch_ctl); ggtt->vm.total = (size / sizeof(gen6_pte_t)) * I915_GTT_PAGE_SIZE; - ggtt->vm.clear_range = gen6_ggtt_clear_range; + ggtt->vm.clear_range = nop_clear_range; + if (!HAS_FULL_PPGTT(dev_priv) || intel_scanout_needs_vtd_wa(dev_priv)) + ggtt->vm.clear_range = gen6_ggtt_clear_range; ggtt->vm.insert_page = gen6_ggtt_insert_page; ggtt->vm.insert_entries = gen6_ggtt_insert_entries; ggtt->vm.cleanup = gen6_gmch_remove; |
