On 4/21/25 10:41 AM, Randy Dunlap wrote:
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)
Yes good point, we will address this.
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.
