commit "04a68a3 drm/i915/gvt: Disable access to stolen memory as a guest"
isn't enough in GVT-d which will pass through IGD to guest and don't run
vgt code. While intel_vgpu_active() is true only when vgt code run on
host and guest in GVT-g.
v2:GVT-g may run in non qemu (Zhenyu)
Signed-off-by: Xiong Zhang <xiong.y.zhang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 1 +
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_gem_stolen.c | 4 ++--
3 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 03d9e45..8b807a9 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -223,6 +223,7 @@ static void intel_detect_pch(struct drm_i915_private *dev_priv)
PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
pch->subsystem_device ==
PCI_SUBDEVICE_ID_QEMU)) {
+ dev_priv->run_on_qemu = true;
dev_priv->pch_type =
intel_virt_detect_pch(dev_priv);
} else
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a5947a4..ad95c87 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2145,6 +2145,7 @@ struct drm_i915_private {
struct intel_uncore uncore;
struct i915_virtual_gpu vgpu;
+ bool run_on_qemu;
struct intel_gvt *gvt;
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index f3abdc2..6a011b0 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -409,8 +409,8 @@ 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");
+ if (dev_priv->run_on_qemu || intel_vgpu_active(dev_priv)) {
+ DRM_INFO("Running in guest, disabling use of stolen memory\n");
return 0;
}
--
1.9.1
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