From: Brad Volkin <bradley.d.volkin@xxxxxxxxx>
In commit
commit 896ab1a5d54269b463a24194c2e4a369103b46d8
Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Wed Aug 6 15:04:51 2014 +0200
drm/i915: Fix up checks for aliasing ppgtt
it looks like we accidentally inverted the check that the command
parser should only run when the driver enables some form of PPGTT.
Testcase: igt/gem_exec_parse
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Brad Volkin <bradley.d.volkin@xxxxxxxxx>
---
At this point all platforms that use the command parser should have at
least aliasing PPGTT enabled I believe, so if you confirm then feel free
to delete the comment about VLV and make this check stricter - maybe
WARN_ON - when applying the patch.
drivers/gpu/drm/i915/i915_cmd_parser.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index c45856b..fb24dae 100644
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -850,7 +850,7 @@ bool i915_needs_cmd_parser(struct intel_engine_cs *ring)
* disabled. That will cause all of the parser's PPGTT checks to
* fail. For now, disable parsing when PPGTT is off.
*/
- if (USES_PPGTT(ring->dev))
+ if (!USES_PPGTT(ring->dev))
return false;
return (i915.enable_cmd_parser == 1);
--
1.8.3.2
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