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    SubjectRe: [PATCH 6/6] efi: Add EFI_SECURE_BOOT bit
    On Tue, Nov 22, 2016 at 12:32:15AM +0000, David Howells wrote:
    > From: Josh Boyer <jwboyer@fedoraproject.org>
    >
    > UEFI machines can be booted in Secure Boot mode. Add a EFI_SECURE_BOOT bit
    > for use with efi_enabled.

    Please add an explanation what you plan to do with this bit going forward.

    Thanks,

    Lukas

    >
    > Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
    > Signed-off-by: David Howells <dhowells@redhat.com>
    > ---
    >
    > arch/x86/kernel/setup.c | 5 +++++
    > include/linux/efi.h | 1 +
    > 2 files changed, 6 insertions(+)
    >
    > diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
    > index 9c337b0e8ba7..a197221a451b 100644
    > --- a/arch/x86/kernel/setup.c
    > +++ b/arch/x86/kernel/setup.c
    > @@ -1160,6 +1160,11 @@ void __init setup_arch(char **cmdline_p)
    >
    > io_delay_init();
    >
    > + if (boot_params.secure_boot) {
    > + set_bit(EFI_SECURE_BOOT, &efi.flags);
    > + pr_info("Secure boot enabled\n");
    > + }
    > +
    > /*
    > * Parse the ACPI tables for possible boot-time SMP configuration.
    > */
    > diff --git a/include/linux/efi.h b/include/linux/efi.h
    > index 615d8704f048..3864de3b40ad 100644
    > --- a/include/linux/efi.h
    > +++ b/include/linux/efi.h
    > @@ -1066,6 +1066,7 @@ extern int __init efi_setup_pcdp_console(char *);
    > #define EFI_ARCH_1 7 /* First arch-specific bit */
    > #define EFI_DBG 8 /* Print additional debug info at runtime */
    > #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
    > +#define EFI_SECURE_BOOT 10 /* Are we in Secure Boot mode? */
    >
    > #ifdef CONFIG_EFI
    > /*
    >

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