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

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 <[email-masked]>
Signed-off-by: Sebastian Andrzej Siewior <[email-masked]>
Link: https://lkml.kernel.org/r/[email-masked]
---
 drivers/firmware/efi/efi.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -97,6 +97,9 @@ 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);