tree c8aeadc4d90d9c47ea494d0274823ec4806cd0de
parent 0c441cb6f3eeed8ac07fd8c3fd5a0dd2ac568362
author Mika Kuoppala <mika.kuoppala@linux.intel.com> 1554971434 +0300
committer Chris Wilson <chris@chris-wilson.co.uk> 1555012131 +0100

drm/i915: Disable read only ppgtt support for gen11

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