From f61018b1fe00238407724ea7a502003c3f71d9a0 Mon Sep 17 00:00:00 2001 From: Yu Zhang Date: Tue, 10 Feb 2015 19:05:52 +0800 Subject: [PATCH] drm/i915: Disable power management for i915 driver in VM With Intel GVT-g, GPU power management is controlled by host driver, so there is no need to provide virtualized GPU PM support. In the future it might be useful to gather VM input for freq boost, but now let's disable it simply. v2: take Chris' comments: - do not special case this to gen6+ Signed-off-by: Yu Zhang Signed-off-by: Jike Song Reviewed-by: Tvrtko Ursulin Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_pm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a3b979d..9b9433f 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5623,6 +5623,10 @@ void intel_enable_gt_powersave(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + /* Powersaving is controlled by the host when inside a VM */ + if (intel_vgpu_active(dev)) + return; + if (IS_IRONLAKE_M(dev)) { mutex_lock(&dev->struct_mutex); ironlake_enable_drps(dev); -- 2.7.4