drm/i915/gvt: vGPU PCI configuration space virtualization
This patch introduces vGPU PCI configuration space virtualization.
- Adjust the trapped GPFN(Guest Page Frame Number) window of virtual GEN
PCI BAR 0 when guest initializes PCI BAR 0 address.
- Emulate OpRegion when guest touches OpRegion.
- Pass-through a part of aperture to guest when guest initializes
aperture BAR.
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index a610f5a3..5330869 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -141,6 +141,7 @@
vgpu->active = false;
idr_remove(&gvt->vgpu_idr, vgpu->id);
+ intel_vgpu_clean_opregion(vgpu);
intel_vgpu_clean_gtt(vgpu);
intel_gvt_hypervisor_detach_vgpu(vgpu);
intel_vgpu_free_resource(vgpu);
@@ -204,11 +205,19 @@
if (ret)
goto out_detach_hypervisor_vgpu;
+ if (intel_gvt_host.hypervisor_type == INTEL_GVT_HYPERVISOR_KVM) {
+ ret = intel_vgpu_init_opregion(vgpu, 0);
+ if (ret)
+ goto out_clean_gtt;
+ }
+
vgpu->active = true;
mutex_unlock(&gvt->lock);
return vgpu;
+out_clean_gtt:
+ intel_vgpu_clean_gtt(vgpu);
out_detach_hypervisor_vgpu:
intel_gvt_hypervisor_detach_vgpu(vgpu);
out_clean_vgpu_resource: