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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-28 07:04:00 +08:00
linux-next/drivers/gpu
Chris Wilson a21ef715fb drm/i915: Differentiate between sw write location into ring and last hw read
We need to keep track of the last location we ask the hw to read up to
(RING_TAIL) separately from our last write location into the ring, so
that in the event of a GPU reset we do not tell the HW to proceed into
a partially written request (which can happen if that request is waiting
for an external signal before being executed).

v2: Refactor intel_ring_reset() (Mika)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100144
Testcase: igt/gem_exec_fence/await-hang
Fixes: 821ed7df6e ("drm/i915: Update reset path to fix incomplete requests")
Fixes: d55ac5bf97 ("drm/i915: Defer transfer onto execution timeline to actual hw submission")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170425130049.26147-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
(cherry picked from commit e6ba9992de)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170615131129.3061-1-chris@chris-wilson.co.uk
2017-06-19 10:52:34 +03:00
..
drm drm/i915: Differentiate between sw write location into ring and last hw read 2017-06-19 10:52:34 +03:00
host1x gpu: host1x: select IOMMU_IOVA 2017-05-18 10:41:28 -04:00
ipu-v3 gpu: ipu-v3: don't depend on DRM being enabled 2017-04-04 10:58:56 +02:00
vga Pointer for Markus's image conversion work. 2017-03-14 15:07:33 +01:00
Makefile