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efi: Allow efi=runtime

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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: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Sebastian Andrzej Siewior 2021-09-24 15:49:19 +02:00 committed by Ard Biesheuvel
parent d9f283ae71
commit 720dff78de
1 changed files with 3 additions and 0 deletions
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3
drivers/firmware/efi/efi.c
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@ -97,6 +97,9 @@ static int __init parse_efi_cmdline(char *str)
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);