diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-02 13:17:06 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-03 11:26:01 +0000 |
| commit | fb218f2027048e199a76cccb9a131b2afd48ccbe (patch) | |
| tree | 0e2160ccd40f9f731d560d2f6637aa763ac59e26 /drivers/gpu/drm/i915/gt/intel_gt_pm.c | |
| parent | 49a24e71b2479064f24cea75e69020a6d480b1e5 (diff) | |
drm/i915/gt: Discard stale context state from across idling
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
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gt_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gt_pm.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c index 9b220c930ebc..d1c2f034296a 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c @@ -213,16 +213,8 @@ int intel_gt_resume(struct intel_gt *gt) intel_llc_enable(>->llc); for_each_engine(engine, gt, id) { - struct intel_context *ce; - intel_engine_pm_get(engine); - ce = engine->kernel_context; - if (ce) { - GEM_BUG_ON(!intel_context_is_pinned(ce)); - ce->ops->reset(ce); - } - engine->serial++; /* kernel context lost */ err = engine->resume(engine); |