From: Tvrtko Ursulin <[email protected]>

Make thread-group preemption default because...?

Signed-off-by: Tvrtko Ursulin <[email protected]>
Cc: Michał Winiarski <[email protected]>
Cc: Joonas Lahtinen <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c 
b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 5d2a8cb70e16..809bb56eb167 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -593,6 +593,11 @@ static void tgl_ctx_workarounds_init(struct 
intel_engine_cs *engine,
        wa_add(wal, FF_MODE2, FF_MODE2_TDS_TIMER_MASK, val,
               IS_TGL_REVID(engine->i915, TGL_REVID_A0, TGL_REVID_A0) ? 0 :
                            FF_MODE2_TDS_TIMER_MASK);
+
+       /* WaDisableGPGPUMidThreadPreemption:tgl */
+       WA_SET_FIELD_MASKED(GEN8_CS_CHICKEN1,
+                           GEN9_PREEMPT_GPGPU_LEVEL_MASK,
+                           GEN9_PREEMPT_GPGPU_THREAD_GROUP_LEVEL);
 }
 
 static void
-- 
2.20.1

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