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drm/i915: set initialised only when init_context callback is NULL 

During execlist_context_deferred_alloc() we presumed that the context is
uninitialised (we only just allocated the state object for it!) and
chose to optimise away the later call to engine->init_context() if
engine->init_context were NULL. This breaks with GVT's contexts that are
marked as pre-initialised to avoid us annoyingly calling
engine->init_context(). The fix is to not override ce->initialised if it
is already true.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1494497262-24855-1-git-send-email-chuanxiao.dong@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chuanxiao Dong 2017-05-11 18:07:42 +08:00 committed by Chris Wilson
parent 73cc0b9aa9
commit 0d402a24df
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_lrc.c
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@ -1956,7 +1956,7 @@ static int execlists_context_deferred_alloc(struct i915_gem_context *ctx,
ce->ring = ring;
ce->state = vma;
ce->initialised = engine->init_context == NULL;
ce->initialised |= engine->init_context == NULL;
return 0;