In order to avoid functional breakage of mis-programmed applications that
have grown to depend on unused MOCS entries, we are programming
those entries to be equal to fully cached ("L3 + LLC") entry.
These reserved and unspecified entries should not be used as they may be
changed to less performant variants with better coherency in the future
if more entries are needed.
V2: As suggested by Lucas De Marchi to utilise __init_mocs_table for
programming default value, setting I915_MOCS_PTE index of tgl_mocs_table
with desired value.
Ayaz A Siddiqui (1):
drm/i915/gt: Initialize reserved and unspecified MOCS indices
drivers/gpu/drm/i915/gt/intel_mocs.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
--
2.26.2
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