drm/i915: Remove livelock from "do_idle_maps" vtd w/a

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A call to wait for the GT to idle from inside the put_pages fallback is
prone to cause an uninterruptible livelock. As it does not provide
adequate serialisation with new requests, simply fallback to a trivial
sleep.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201209164008.5487-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-12-09 16:40:06 +00:00

parent 338d58cf47

commit 63de1da147

1 changed files with 10 additions and 15 deletions

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drivers/gpu/drm/i915/i915_gem_gtt.c

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