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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-11-09 10:39:05 +0000 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-02-16 11:59:13 +0200 |
| commit | ddd09373628adcbdc3f7b9098d22328834f8d772 (patch) | |
| tree | c7808412dc6487fee946b0ff2483924a2bbf109a /drivers/gpu/drm/i915/i915_gem_stolen.c | |
| parent | aa9323dd49b23932a09023012f050556de64f118 (diff) | |
| download | op-kernel-dev-ddd09373628adcbdc3f7b9098d22328834f8d772.zip op-kernel-dev-ddd09373628adcbdc3f7b9098d22328834f8d772.tar.gz | |
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 <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161109103905.17860-1-chris@chris-wilson.co.uk
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: stable@vger.kernel.org
(cherry picked from commit 04a68a35ce6d7b54749989f943993020f48fed62)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_stolen.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_stolen.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index ec7c5d8..9673bcc 100644 --- a/drivers/gpu/drm/i915/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c @@ -405,6 +405,11 @@ 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"); |
