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authorLinus Torvalds2021-11-01 15:05:48 -0700
committerLinus Torvalds2021-11-01 15:05:48 -0700
commit93351d2cc99643960f3931bcd1fe21ae7e5c6ae5 (patch)
treeaf9f20eb67fec6c8c19b22f72b8ff14dfae85473 /drivers/firmware
parentfe354159ca534071840a7d9bb1779d557e28f344 (diff)
parent720dff78de360ad9742d5f438101cedcdb5dad84 (diff)
Merge tag 'efi-next-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Borislav Petkov: "The last EFI pull request which is forwarded through the tip tree, for v5.16. From now on, Ard will be sending stuff directly. Disable EFI runtime services by default on PREEMPT_RT, while adding the ability to re-enable them on demand by passing efi=runtime on the command line" * tag 'efi-next-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: Allow efi=runtime efi: Disable runtime services on RT
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/efi.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 847f33ffc4ae..ae79c3300129 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -66,7 +66,7 @@ struct mm_struct efi_mm = {
struct workqueue_struct *efi_rts_wq;
-static bool disable_runtime;
+static bool disable_runtime = IS_ENABLED(CONFIG_PREEMPT_RT);
static int __init setup_noefi(char *arg)
{
disable_runtime = true;
@@ -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);