efi_enter_virtual_mode  601 arch/ia64/kernel/efi.c 	efi_enter_virtual_mode();
efi_enter_virtual_mode 1042 include/linux/efi.h extern void efi_enter_virtual_mode (void);	/* switch EFI to virtual mode, if possible */
efi_enter_virtual_mode  754 init/main.c    		efi_enter_virtual_mode();