drm/i915: Disable read only ppgtt support for gen11

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On gen11 writing to read only ppgtt page causes a gpu hang.
This behaviour is different than with previous gen where
read only ppgtt access is supported. On those, the write
is just dropped without visible side effects.

Disable ro ppgtt support on gen11 until a solution can
be found to bring it into line with its predecessors.

References: HSDES#1807136187
References: https://bugzilla.freedesktop.org/show_bug.cgi?id=108569
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411083034.28311-1-mika.kuoppala@linux.intel.com

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Mika Kuoppala 2019-04-11 11:30:34 +03:00 • committed by Chris Wilson

parent 0c441cb6f3

commit 3936867dbc

1 changed files with 8 additions and 3 deletions

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drivers/gpu/drm/i915/i915_gem_gtt.c

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