drm/i915/ttm: disallow CPU fallback mode for ccs pages

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Falling back to memcpy/memset shouldn't be allowed if we know we have
CCS state to manage using the blitter. Otherwise we are potentially
leaving the aux CCS state in an unknown state, which smells like an info
leak.

Fixes: 48760ffe92 ("drm/i915/gt: Clear compress metadata for Flat-ccs objects")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Cc: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Cc: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220629174350.384910-12-matthew.auld@intel.com

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This commit is contained in:

Matthew Auld 2022-06-29 18:43:49 +01:00

parent bfe53be268

commit efeb3caf43

4 changed files with 31 additions and 18 deletions

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26

drivers/gpu/drm/i915/gem/i915_gem_object.c

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2

drivers/gpu/drm/i915/gem/i915_gem_object.h

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18

drivers/gpu/drm/i915/gem/i915_gem_ttm.c

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3

drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c

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