Re: [PATCH v9 09/19] x86: Secure Launch kernel late boot stub

Jarkko Sakkinen
2024-06-04T19:59:25Z

On Fri May 31, 2024 at 4:03 AM EEST, Ross Philipson wrote:
> The routine slaunch_setup is called out of the x86 specific setup_arch()
> routine during early kernel boot. After determining what platform is
> present, various operations specific to that platform occur. This
> includes finalizing setting for the platform late launch and verifying
> that memory protections are in place.
>
> For TXT, this code also reserves the original compressed kernel setup
> area where the APs were left looping so that this memory cannot be used.
>
> Signed-off-by: Ross Philipson <ross.philipson@oracle.com>
> ---
> arch/x86/kernel/Makefile | 1 +
> arch/x86/kernel/setup.c | 3 +
> arch/x86/kernel/slaunch.c | 525 +++++++++++++++++++++++++++++++++++++
> drivers/iommu/intel/dmar.c | 4 +
> 4 files changed, 533 insertions(+)
> create mode 100644 arch/x86/kernel/slaunch.c
>
> diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
> index 5d128167e2e2..b35ca99ab0a0 100644
> --- a/arch/x86/kernel/Makefile
> +++ b/arch/x86/kernel/Makefile
> @@ -76,6 +76,7 @@ obj-$(CONFIG_X86_32) += tls.o
> obj-$(CONFIG_IA32_EMULATION) += tls.o
> obj-y += step.o
> obj-$(CONFIG_INTEL_TXT) += tboot.o
> +obj-$(CONFIG_SECURE_LAUNCH) += slaunch.o

Hmm... should that be CONFIG_X86_SECURE_LAUNCH?

Just asking...

BR, Jarkko