Re: [RFC PATCH v3 1/8] x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking

From: Randy Dunlap
Date: Thu Aug 30 2018 - 15:38:27 EST


On 08/30/2018 07:40 AM, Yu-cheng Yu wrote:
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 2cfe11e1cf7f..0d97b03f35f6 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1941,6 +1941,18 @@ 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 return-/jmp-
> + oriented programing attacks.

programming

> +
> + If unsure, say y
> +
> config EFI
> bool "EFI runtime service support"
> depends on ACPI


--
~Randy