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Commit 0811fa66 authored by fred gao's avatar fred gao Committed by Zhenyu Wang
Browse files

drm/i915/gvt: Fix GDRST vreg state after reset 



Emulating the GDRST read behavior correctly to ack the
guest reset request.

v2:
- split the original patch into two:
  GDRST read handler and virtual gpu reset. (Zhenyu)
v3:
- emulate the GDRST read right after write. (Zhenyu)

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhang Yulei <yulei.zhang@intel.com>
Signed-off-by: default avatarfred gao <fred.gao@intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent 178cd160

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

+3 −0
Original line number Diff line number Diff line
@@ -298,6 +298,9 @@ static int gdrst_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, 


	intel_gvt_reset_vgpu_locked(vgpu, false, engine_mask);



	/* sw will wait for the device to ack the reset request */

	 vgpu_vreg(vgpu, offset) = 0;



	return 0;

}