Commit 2c7f9a4d authored Feb 14, 2019 by Colin Xu Committed by Zhenyu Wang Feb 18, 2019

drm/i915/gvt: Use consist max display pipe numbers as i915 definition



GVT implements a homogeneous vGPU as host GPU so max vGPU display pipes
can't exceed HW. The inconsistency definition has potential risks which
could cause array indexing overflow.

Remove the unnecessary define of INTEL_GVT_MAX_PIPE and align with i915.

Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

parent 39c68e87

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

+1 −3

Original line number	Diff line number	Diff line
		@@ -111,11 +111,9 @@ struct intel_vgpu_cfg_space {

		#define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space)

		#define INTEL_GVT_MAX_PIPE 4

		struct intel_vgpu_irq {
		bool irq_warn_once[INTEL_GVT_EVENT_MAX];
		DECLARE_BITMAP(flip_done_event[INTEL_GVT_MAX_PIPE],
		DECLARE_BITMAP(flip_done_event[I915_MAX_PIPES],
		INTEL_GVT_EVENT_MAX);
		};

Admin message