| commit | 987abd5c62f92ee4970b45aa077f47949974e615 | [log] [tgz] |
|---|---|---|
| author | Chris Wilson <chris@chris-wilson.co.uk> | Thu Nov 08 08:17:38 2018 +0000 |
| committer | Chris Wilson <chris@chris-wilson.co.uk> | Thu Nov 08 12:20:10 2018 +0000 |
| tree | 17c4ae1c651a1a64198fccdfb638813abbcd2592 | |
| parent | a33e1ece777996ddddb1f23a30f8c66422ed0b68 [diff] |
drm/i915/execlists: Force write serialisation into context image vs execution Ensure that the writes into the context image are completed prior to the register mmio to trigger execution. Although previously we were assured by the SDM that all writes are flushed before an uncached memory transaction (our mmio write to submit the context to HW for execution), we have empirical evidence to believe that this is not actually the case. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108656 References: https://bugs.freedesktop.org/show_bug.cgi?id=108315 References: https://bugs.freedesktop.org/show_bug.cgi?id=106887 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181108081740.25615-1-chris@chris-wilson.co.uk Cc: stable@vger.kernel.org