drm/i915/ringbuffer: Reload PDs harder on byt/bcs

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Baytrail takes a little more convincing that it needs to actually reload
its Page Directoy (ppGTT) before the context switch, so repeat it until
it gets the message. Once again the arbitrary values here are
empirically derived.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107861
Testcase: igt/gem_exec_parallel/fds
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180910130808.10809-1-chris@chris-wilson.co.uk

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Chris Wilson 2018-09-10 14:08:08 +01:00

parent d3f3e5e438

commit e2a13d1b24

1 changed files with 20 additions and 3 deletions

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23

drivers/gpu/drm/i915/intel_ringbuffer.c

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