drm/i915/gvt: clear guest opregion

Since there's no opregion in vgpu so clear the opregion bits in case
guest access it.

Signed-off-by: Xiaoguang Chen <xiaoguang.chen@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 044125c..4f64845 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -99,6 +99,7 @@ static void setup_vgpu_cfg_space(struct intel_vgpu *vgpu,
         */
        memset(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_1, 0, 4);
        memset(vgpu_cfg_space(vgpu) + PCI_BASE_ADDRESS_3, 0, 4);
+       memset(vgpu_cfg_space(vgpu) + INTEL_GVT_PCI_OPREGION, 0, 4);
 
        for (i = 0; i < INTEL_GVT_MAX_BAR_NUM; i++) {
                vgpu->cfg_space.bar[i].size = pci_resource_len(