drm/amdkfd: gfx12.1 add no-op prefetch on trap entry

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VMEM instructions may hang after trap exit. Issue a no-op
prefetch to reset wave VMEM state.

v2: squash in preserve SCC on trap entry

Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Cc: Joseph Greathouse <joseph.greathouse@amd.com>
Cc: Michael Chen <michael.chen@amd.com>
Cc: Lancelot Six <lancelot.six@amd.com>
Cc: Vladimir Indic <vladimir.indic@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jay Cornwall 2026-06-08 09:53:57 -05:00 • committed by Alex Deucher

parent 42cc336311

commit 0e1e0f87af

2 changed files with 672 additions and 629 deletions

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1270

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h

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35

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx12.asm

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