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From: Randy Dunlap <rdunlap@infradead.org>
To: Yu-cheng Yu <yu-cheng.yu@intel.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org, x86@kernel.org,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H.J. Lu" <hjl.tools@gmail.com>,
Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@amacapital.net>,
Jonathan Corbet <corbet@lwn.net>, Oleg Nesterov <oleg@redhat.com>,
Arnd Bergmann <arnd@arndb.de>,
Mike Kravetz <mike.kravetz@oracle.com>
Subject: Re: [PATCH 1/7] x86/cet: Add Kconfig option for user-mode Indirect Branch Tracking
Date: Thu, 7 Jun 2018 09:43:49 -0700 [thread overview]
Message-ID: <9c99f892-8965-8b08-4a80-506b48c2205d@infradead.org> (raw)
In-Reply-To: <20180607143855.3681-2-yu-cheng.yu@intel.com>
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@intel.com>
> ---
> 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
next prev parent reply other threads:[~2018-06-07 16:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-07 14:38 [PATCH 0/7] Control Flow Enforcement - Part (4) Yu-cheng Yu
2018-06-07 14:38 ` [PATCH 1/7] x86/cet: Add Kconfig option for user-mode Indirect Branch Tracking Yu-cheng Yu
2018-06-07 16:43 ` Randy Dunlap [this message]
2018-06-07 14:38 ` [PATCH 2/7] x86/cet: User-mode indirect branch tracking support Yu-cheng Yu
2018-06-07 14:38 ` [PATCH 3/7] mm/mmap: Add IBT bitmap size to address space limit check Yu-cheng Yu
2018-06-07 18:39 ` Andy Lutomirski
2018-06-07 14:38 ` [PATCH 4/7] x86/cet: add arcp_prctl functions for indirect branch tracking Yu-cheng Yu
2018-06-07 14:38 ` [PATCH 5/7] x86: Insert endbr32/endbr64 to vDSO Yu-cheng Yu
2018-06-07 20:50 ` Andy Lutomirski
2018-06-07 22:03 ` H.J. Lu
2018-06-07 23:00 ` Andy Lutomirski
2018-06-08 0:31 ` H.J. Lu
2018-06-08 0:47 ` Andy Lutomirski
2018-06-07 14:38 ` [PATCH 6/7] tools: Add cetcmd Yu-cheng Yu
2018-06-07 14:38 ` [PATCH 7/7] x86/cet: Add PTRACE interface for CET Yu-cheng Yu
2018-06-07 18:32 ` Andy Lutomirski
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