drm/i915/gvt: Refine the intel_vgpu_reset_gtt reset function
When doing the VGPU reset, we don't need to do the gtt/ppgtt reset.
This will make the GVT to do the ppgtt shadow every time for
a workload and caused really bad performance after a VGPU reset.
This patch will make sure ppgtt clean only happen at device module
level reset to fix this.
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@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 90c14e6..5b44d12 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -502,11 +502,11 @@ void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr,
/* full GPU reset or device model level reset */
if (engine_mask == ALL_ENGINES || dmlr) {
- intel_vgpu_reset_gtt(vgpu, dmlr);
-
/*fence will not be reset during virtual reset */
- if (dmlr)
+ if (dmlr) {
+ intel_vgpu_reset_gtt(vgpu);
intel_vgpu_reset_resource(vgpu);
+ }
intel_vgpu_reset_mmio(vgpu, dmlr);
populate_pvinfo_page(vgpu);