From 04a68a35ce6d7b54749989f943993020f48fed62 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 9 Nov 2016 10:39:05 +0000 Subject: [PATCH] drm/i915/gvt: Disable access to stolen memory as a guest Explicitly disable stolen memory when running as a guest in a virtual machine, since the memory is not mediated between clients and reserved entirely for the host. The actual size should be reported as zero, but like every other quirk we want to tell the user what is happening. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99028 Signed-off-by: Chris Wilson Cc: Zhenyu Wang Cc: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20161109103905.17860-1-chris@chris-wilson.co.uk Reviewed-by: Zhenyu Wang Cc: stable@vger.kernel.org --- drivers/gpu/drm/i915/i915_gem_stolen.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index 82ca8f49fec1..f3abdc27c5dd 100644 --- a/drivers/gpu/drm/i915/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c @@ -409,6 +409,11 @@ int i915_gem_init_stolen(struct drm_i915_private *dev_priv) mutex_init(&dev_priv->mm.stolen_lock); + if (intel_vgpu_active(dev_priv)) { + DRM_INFO("iGVT-g active, disabling use of stolen memory\n"); + return 0; + } + #ifdef CONFIG_INTEL_IOMMU if (intel_iommu_gfx_mapped && INTEL_GEN(dev_priv) < 8) { DRM_INFO("DMAR active, disabling use of stolen memory\n"); -- 2.20.1