On Mon Aug 12, 2024 at 10:02 PM EEST, wrote: > On 6/4/24 3:59 PM, Jarkko Sakkinen wrote: > > 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@xxxxxxxxxx> > >> --- > >> 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? > > Further thoughts on this after discussions... > > The Secure Launch feature will cover other architectures beyond x86 in > the future. We may have to rework/move the config settings at that point > but for now I don't think we want to change it. OK got it. BR, Jarkko
