drm/i915/gvt: fix crash in vgpu_reset_execlist

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We initiate vgpu->workload_q_head via for_each_engine
macro which may skip unavailable engines. So we should
follow this rule anywhere. The function
intel_vgpu_reset_execlist is not aware of this. Kernel
crash when touch a uninitiated vgpu->workload_q_head[x].
Let's fix it by using for_each_engine_masked and skip
unavailable engine ID. Meanwhile rename ring_bitmap to
general name engine_mask.

v2: remove unnecessary engine activation check (zhenyu)

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

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Du, Changbin 2016-11-11 16:33:06 +08:00 • committed by Zhenyu Wang

parent 4f3f1aed4b

commit 0427f06aec

2 changed files with 12 additions and 14 deletions

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24

drivers/gpu/drm/i915/gvt/execlist.c

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2

drivers/gpu/drm/i915/gvt/execlist.h

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