diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-02-11 12:01:31 +0000 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2020-02-18 09:53:18 +0200 |
| commit | 15de9cb5c9c83a23be92b8f7a1178cead1486587 (patch) | |
| tree | 7ad1004591426a70f262910f664c36d19f28413e /drivers/gpu/drm/i915/gem | |
| parent | b1339ecac661e1cf3e1dc78ac56bff3aeeaeb92c (diff) | |
drm/i915/gt: Avoid resetting ring->head outside of its timeline mutex
We manipulate ring->head while active in i915_request_retire underneath
the timeline manipulation. We cannot rely on a stable ring->head outside
of the timeline->mutex, in particular while setting up the context for
resume and reset.
Closes: https://gitlab.freedesktop.org/drm/intel/issues/1126
Fixes: 0881954965e3 ("drm/i915: Introduce intel_context.pin_mutex for pin management")
Fixes: e5dadff4b093 ("drm/i915: Protect request retirement with timeline->mutex")
References: f3c0efc9fe7a ("drm/i915/execlists: Leave resetting ring to intel_ring")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200211120131.958949-1-chris@chris-wilson.co.uk
(cherry picked from commit 42827350f75c56d0fe9f15d8425a1390528958b6)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gem')
0 files changed, 0 insertions, 0 deletions