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drm/i915/gt: Mark up virtual engine uabi_instance

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commit 1325008f5c8dbc84aa835d98af8447fa0569bc4d upstream.

Be sure to initialise the uabi_instance on the virtual engine to the
special invalid value, just in case we ever peek at it from the uAPI.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: 750e76b4f9 ("drm/i915/gt: Move the [class][inst] lookup for engines onto the GT")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106123921.2543886-1-chris@chris-wilson.co.uk
(cherry picked from commit f75fc37b5e70b75f21550410f88e2379648120e2)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chris Wilson 2020-01-06 12:39:21 +00:00 • committed by Greg Kroah-Hartman
commit e1a17ea063
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/gt/intel_lrc.c
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@ -3716,9 +3716,11 @@ intel_execlists_create_virtual(struct i915_gem_context *ctx,
ve->base.i915 = ctx->i915;
ve->base.gt = siblings[0]->gt;
ve->base.id = -1;
ve->base.class = OTHER_CLASS;
ve->base.uabi_class = I915_ENGINE_CLASS_INVALID;
ve->base.instance = I915_ENGINE_CLASS_INVALID_VIRTUAL;
ve->base.uabi_instance = I915_ENGINE_CLASS_INVALID_VIRTUAL;
/*
* The decision on whether to submit a request using semaphores