From: Sebastian Andrzej Siewior <>
Date: Thu, 26 Jul 2018 15:06:10 +0200
Subject: [PATCH] efi: Allow efi=runtime

In case the command line option "efi=noruntime" is default at built-time, the user
could overwrite its state by `efi=runtime' and allow it again.

This is useful on PREEMPT_RT where "efi=noruntime" is default and the
user might need to alter the boot order for instance.

Acked-by: Ard Biesheuvel <>
Signed-off-by: Sebastian Andrzej Siewior <>
 drivers/firmware/efi/efi.c |    3 +++
 1 file changed, 3 insertions(+)

@ drivers/firmware/efi/efi.c:100 @ static int __init parse_efi_cmdline(char
 	if (parse_option_str(str, "noruntime"))
 		disable_runtime = true;
+	if (parse_option_str(str, "runtime"))
+		disable_runtime = false;
 	if (parse_option_str(str, "nosoftreserve"))
 		set_bit(EFI_MEM_NO_SOFT_RESERVE, &efi.flags);