drm/i915/gen9: implement WaConextSwitchWithConcurrentTLBInvalidate

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This patch enables a workaround for a mid thread preemption
issue where a hardware timing problem can prevent the
context restore from happening, leading to a hang.

v2: move to gen9_init_workarounds (Arun)
v3: move to start of gen9_init_workarounds (Arun)

Signed-off-by: Tim Gore <tim.gore@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465816501-25557-1-git-send-email-tim.gore@intel.com
(cherry picked from commit a8ab5ed5e1)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>

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Tim Gore 2016-06-13 12:15:01 +01:00 • committed by Mika Kuoppala

parent a89bd7beb1

commit 12be73a0f1

2 changed files with 7 additions and 0 deletions

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4

drivers/gpu/drm/i915/i915_reg.h

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3

drivers/gpu/drm/i915/intel_ringbuffer.c

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