diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-16 13:49:29 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-17 14:44:57 +0100 |
| commit | fff8102aaed59014cb2d8034bdca231185496b16 (patch) | |
| tree | 73b837343eb732442cc32dbd3ef270a539121e85 /drivers/gpu/drm/i915/gt/intel_lrc.c | |
| parent | 0629d4da1f159778063767fb0ac1c951034c5477 (diff) | |
| download | linux-fff8102aaed59014cb2d8034bdca231185496b16.tar.bz2 | |
drm/i915/execlists: Process interrupted context on reset
By stopping the rings, we may trigger an arbitration point resulting in
a premature context-switch (i.e. a completion event before the request
is actually complete). This clears the active context before the reset,
but we must remember to rewind the incomplete context for replay upon
resume.
Fixes: 1863e3020ab5 ("drm/i915/execlists: Always reset the context's RING registers")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190716124931.5870-3-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_lrc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_lrc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index f35a57d6d34a..6564b5da224f 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -1425,7 +1425,8 @@ static void process_csb(struct intel_engine_cs *engine) * coherent (visible from the CPU) before the * user interrupt and CSB is processed. */ - GEM_BUG_ON(!i915_request_completed(*execlists->active)); + GEM_BUG_ON(!i915_request_completed(*execlists->active) && + !reset_in_progress(execlists)); execlists_schedule_out(*execlists->active++); GEM_BUG_ON(execlists->active - execlists->inflight > @@ -2251,7 +2252,7 @@ static void __execlists_reset(struct intel_engine_cs *engine, bool stalled) */ rq = execlists_active(execlists); if (!rq) - return; + goto unwind; ce = rq->hw_context; GEM_BUG_ON(i915_active_is_idle(&ce->active)); @@ -2328,6 +2329,7 @@ out_replay: intel_ring_update_space(ce->ring); __execlists_update_reg_state(ce, engine); +unwind: /* Push back any incomplete requests for replay after the reset. */ __unwind_incomplete_requests(engine); } |