| Message ID | 20240214221847.2066632-4-ross.philipson@oracle.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | x86: Trenchboot secure dynamic launch Linux kernel support | expand |
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. > + depends on X86_64 && X86_X2APIC This depends on CONFIG_TCG_TPM as well (I got build failures without it) > + 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 >
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 >> >
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 + depends on X86_64 && X86_X2APIC + 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
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(+)