drm/amdkfd: Apply VGPR bank state fixup on gfx12.1 trap exit

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- Identify co-issue of S_SET_VGPR_MSB and VALU with banked VGPR
- Restore previous bank setting when exiting the trap

v2:
- Refine VOP3PX2 detection
- Improve load pipelining
- Fix a comment typo

Signed-off-by: Jay Cornwall <jay.cornwall@amd.com>
Reviewed-by: Lancelot Six <lancelot.six@amd.com>
Cc: Joseph Greathouse <joseph.greathouse@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jay Cornwall 2025-10-23 15:33:04 -05:00 • committed by Alex Deucher

parent 1005ab86cf

commit ba80939fec

2 changed files with 706 additions and 415 deletions

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967

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

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166

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

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