drm/nouveau/fifo/gk104-: trigger mmu fault before attempting engine recovery

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Greatly improves the chances of recovering the GPU from a CTXSW_TIMEOUT.

Tested with piglit's arb_shader_image_load_store-atomicity, which causes
GR to hang in such a way that recovery failed (CTXSW_TIMEOUT continually
re-triggers).

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Ben Skeggs 2017-01-18 15:37:24 +10:00

parent 03f16f5f27

commit 3ebef76a1d

1 changed files with 41 additions and 0 deletions

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drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c

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