drm/i915/gt: Discard stale context state from across idling

Browse source

Before we idle, on parking, we switch to the kernel context such that we
have a scratch context loaded while the GPU idle, protecting any
precious user state. Be paranoid and assume that the idle state may have
been trashed, and reset the kernel_context image after idling.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200102131707.1463945-4-chris@chris-wilson.co.uk

...

This commit is contained in:

Chris Wilson 2020-01-02 13:17:06 +00:00

parent 49a24e71b2

commit fb218f2027

3 changed files with 11 additions and 8 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/gpu/drm/i915/gt/intel_engine_pm.c

View file

8

drivers/gpu/drm/i915/gt/intel_gt_pm.c

View file

5

drivers/gpu/drm/i915/gt/mock_engine.c

View file