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    SubjectRe: [PATCH v8 03/15] x86: Secure Launch Kconfig
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    On 2/14/24 11:59 PM, Ard Biesheuvel wrote:
    > On Wed, 14 Feb 2024 at 23:31, Ross Philipson <ross.philipson@oracle.com> wrote:
    >>
    >> Initial bits to bring in Secure Launch functionality. Add Kconfig
    >> options for compiling in/out the Secure Launch code.
    >>
    >> Signed-off-by: Ross Philipson <ross.philipson@oracle.com>
    >> ---
    >> arch/x86/Kconfig | 12 ++++++++++++
    >> 1 file changed, 12 insertions(+)
    >>
    >> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
    >> index 5edec175b9bf..d96d75f6f1a9 100644
    >> --- a/arch/x86/Kconfig
    >> +++ b/arch/x86/Kconfig
    >> @@ -2071,6 +2071,18 @@ config EFI_RUNTIME_MAP
    >>
    >> See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map.
    >>
    >> +config SECURE_LAUNCH
    >> + bool "Secure Launch support"
    >> + default n
    >
    > 'n' is already the default, so you can drop this line.

    Ack

    >
    >> + depends on X86_64 && X86_X2APIC
    >
    > This depends on CONFIG_TCG_TPM as well (I got build failures without it)

    Yes I will add that. I may have to add a couple of other things too.

    Thanks
    Ross

    >
    >> + help
    >> + The Secure Launch feature allows a kernel to be loaded
    >> + directly through an Intel TXT measured launch. Intel TXT
    >> + establishes a Dynamic Root of Trust for Measurement (DRTM)
    >> + where the CPU measures the kernel image. This feature then
    >> + continues the measurement chain over kernel configuration
    >> + information and init images.
    >> +
    >> source "kernel/Kconfig.hz"
    >>
    >> config ARCH_SUPPORTS_KEXEC
    >> --
    >> 2.39.3
    >>
    >


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