guc_action_vf_save_restore
ret = guc_action_vf_save_restore(>->uc.guc, vfid, GUC_PF_OPCODE_VF_SAVE, 0, 0);
ret = guc_action_vf_save_restore(guc, vfid, GUC_PF_OPCODE_VF_SAVE,
ret = guc_action_vf_save_restore(guc, vfid, GUC_PF_OPCODE_VF_RESTORE,