Hi, On 4/21/25 9:26 AM, Ross Philipson wrote: > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 4b9f378e05f6..badde1e9742e 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -2001,6 +2001,17 @@ config EFI_RUNTIME_MAP > > See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map. > > +config SECURE_LAUNCH > + bool "Secure Launch support" > + depends on X86_64 && X86_X2APIC && TCG_TIS && TCG_CRB && > CRYPTO_LIB_SHA1 && CRYPTO_LIB_SHA256
It's normal to select needed library symbols instead of depending on them. Nothing else in the kernel tree uses depends on for these 2 Kconfig symbols. (CRYPTO_LIB_SHAxxx) > + 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. -- ~Randy
