On 06/07/2018 07:38 AM, Yu-cheng Yu wrote: > The user-mode indirect branch tracking support is done mostly by > GCC to insert ENDBR64/ENDBR32 instructions at branch targets. > The kernel provides CPUID enumeration, feature MSR setup and > the allocation of legacy bitmap. > > Signed-off-by: Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> > --- > arch/x86/Kconfig | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 24339a5299da..27bfbd137fbe 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -1953,6 +1953,18 @@ config X86_INTEL_SHADOW_STACK_USER > > If unsure, say y. > > +config X86_INTEL_BRANCH_TRACKING_USER > + prompt "Intel Indirect Branch Tracking for user-mode" > + def_bool n > + depends on CPU_SUP_INTEL && X86_64 > + select X86_INTEL_CET > + select ARCH_HAS_PROGRAM_PROPERTIES > + ---help--- > + Indirect Branch Tracking provides hardware protection against > + oriented programing attacks. programming and please just move the return/jmp parts to the next line also: protection against return-/jmp-oriented programming attacks. > + > + If unsure, say y > + > config EFI > bool "EFI runtime service support" > depends on ACPI > -- ~Randy
