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Open Source and information security mailing list archives
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Date: Thu, 30 Aug 2018 12:38:06 -0700 From: Randy Dunlap <rdunlap@...radead.org> To: Yu-cheng Yu <yu-cheng.yu@...el.com>, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, linux-mm@...ck.org, linux-arch@...r.kernel.org, linux-api@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, Andy Lutomirski <luto@...capital.net>, Balbir Singh <bsingharora@...il.com>, Cyrill Gorcunov <gorcunov@...il.com>, Dave Hansen <dave.hansen@...ux.intel.com>, Florian Weimer <fweimer@...hat.com>, "H.J. Lu" <hjl.tools@...il.com>, Jann Horn <jannh@...gle.com>, Jonathan Corbet <corbet@....net>, Kees Cook <keescook@...omiun.org>, Mike Kravetz <mike.kravetz@...cle.com>, Nadav Amit <nadav.amit@...il.com>, Oleg Nesterov <oleg@...hat.com>, Pavel Machek <pavel@....cz>, Peter Zijlstra <peterz@...radead.org>, "Ravi V. Shankar" <ravi.v.shankar@...el.com>, Vedvyas Shanbhogue <vedvyas.shanbhogue@...el.com> Subject: Re: [RFC PATCH v3 1/8] x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking 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
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