From 2345ab1df8a9aa3cdca942142b48eb141faeb1c3 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong Date: Mon, 8 May 2017 09:27:39 +0800 Subject: drm/i915/gvt: not to restore in-context mmio Needn't to restore the in-context MMIO when SCHEDULE_OUT. Sometimes with restoring the in-context MMIO, some GPU hang can be observed. So remove the in-context MMIO restore Signed-off-by: Chuanxiao Dong Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/render.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/gpu/drm/i915/gvt/render.c') diff --git a/drivers/gpu/drm/i915/gvt/render.c b/drivers/gpu/drm/i915/gvt/render.c index 0beb83563b08..05b75b9f852a 100644 --- a/drivers/gpu/drm/i915/gvt/render.c +++ b/drivers/gpu/drm/i915/gvt/render.c @@ -333,6 +333,9 @@ void intel_gvt_restore_render_mmio(struct intel_vgpu *vgpu, int ring_id) } else v = mmio->value; + if (mmio->in_context) + continue; + I915_WRITE(mmio->reg, v); POSTING_READ(mmio->reg); -- cgit v1.2.3