drm/i915: Use more optimal VTd alignment for planes

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Depending on the platform and/or plane type we can get away
with a bit less alignment in the VT-d w/a. Reduce the numbers
accordingly.

Note that it's not actually clear in VLV/CHV need this w/a,
and if they do we don't actually know what kind of alignment
is sufficient. Leave the 256k alignment in place for now, but
toss in a FIXME.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250122151755.6928-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

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This commit is contained in:

Ville Syrjälä 2025-01-22 17:17:52 +02:00

parent 241d831213

commit 2ffa487851

3 changed files with 3 additions and 2 deletions

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1

drivers/gpu/drm/i915/display/i9xx_plane.c

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2

drivers/gpu/drm/i915/display/intel_cursor.c

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2

drivers/gpu/drm/i915/display/intel_sprite.c

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