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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-09 10:12:33 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-16 14:06:45 +0100 |
| commit | 09975b861aa0c5cc0f1a6f9543807f344c4c12ae (patch) | |
| tree | 57a713df25ad1b27f84bd4676380add1726fc933 /drivers/gpu/drm/i915/gt/intel_engine_cs.c | |
| parent | cfe7288c276e359eebf057699fe86c2f8af14224 (diff) | |
| download | lwn-09975b861aa0c5cc0f1a6f9543807f344c4c12ae.tar.gz lwn-09975b861aa0c5cc0f1a6f9543807f344c4c12ae.zip | |
drm/i915/execlists: Disable preemption under GVT
Preempt-to-busy uses a GPU semaphore to enforce an idle-barrier across
preemption, but mediated gvt does not fully support semaphores.
v2: Fiddle around with the flags and settle on using has-semaphores for
the core bits so that we retain the ability to preempt our own
semaphores.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Xiaolin Zhang <xiaolin.zhang@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190709091233.8573-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_cs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 9570659aa360..c0bc9cb7f228 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -829,6 +829,8 @@ int intel_engine_init_common(struct intel_engine_cs *engine) struct drm_i915_private *i915 = engine->i915; int ret; + engine->set_default_submission(engine); + /* We may need to do things with the shrinker which * require us to immediately switch back to the default * context. This can cause a problem as pinning the @@ -847,8 +849,6 @@ int intel_engine_init_common(struct intel_engine_cs *engine) engine->emit_fini_breadcrumb_dw = ret; - engine->set_default_submission(engine); - return 0; err_unpin: |