drm/i915/mtl: Resize noa_wait BO size to save restore GPR regs

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On MTL, gt->scratch was using stolen lmem. An MI_SRM to stolen lmem
caused a hang that was attributed to saving and restoring the GPR
registers used for noa_wait.

Add an additional page in noa_wait BO to save/restore GPR registers for
the noa_wait logic.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221212220902.1819159-2-umesh.nerlige.ramappa@intel.com

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This commit is contained in:

Umesh Nerlige Ramappa 2022-12-12 14:08:59 -08:00 • committed by John Harrison

parent 44da203206

commit a4b6e74c88

2 changed files with 17 additions and 14 deletions

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6

drivers/gpu/drm/i915/gt/intel_gt_types.h

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25

drivers/gpu/drm/i915/i915_perf.c

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