On Thu, Nov 17, 2016 at 4:58 PM, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote: > On 16 November 2016 at 21:47, David Howells <dhowe...@redhat.com> wrote: >> From: Josh Boyer <jwbo...@fedoraproject.org> >> >> UEFI machines can be booted in Secure Boot mode. Add a EFI_SECURE_BOOT bit >> for use with efi_enabled. >> >> Signed-off-by: Josh Boyer <jwbo...@fedoraproject.org> >> Signed-off-by: David Howells <dhowe...@redhat.com> >> --- >> >> arch/x86/kernel/setup.c | 1 + >> include/linux/efi.h | 1 + >> 2 files changed, 2 insertions(+) >> >> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c >> index 9521acce8378..539f29587712 100644 >> --- a/arch/x86/kernel/setup.c >> +++ b/arch/x86/kernel/setup.c >> @@ -1164,6 +1164,7 @@ void __init setup_arch(char **cmdline_p) >> if (boot_params.secure_boot && >> IS_ENABLED(CONFIG_EFI_SECURE_BOOT_LOCK_DOWN)) { >> lock_kernel_down(); >> + set_bit(EFI_SECURE_BOOT, &efi.flags); > > Why is this x86 only? And why is this bit only set if
Because it was initially written like 3 years ago before ARM even had UEFI. Needs a refresh. > CONFIG_EFI_SECURE_BOOT_LOCK_DOWN is enabled? That part is new and something David added. Probably not necessary. josh