All of lore.kernel.org
 help / color / mirror / Atom feed
From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: 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>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [PATCH 1/7] x86/cet: Add Kconfig option for user-mode Indirect Branch Tracking
Date: Thu,  7 Jun 2018 07:38:49 -0700	[thread overview]
Message-ID: <20180607143855.3681-2-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20180607143855.3681-1-yu-cheng.yu@intel.com>

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 return-/jmp-
+	  oriented programing attacks.
+
+	  If unsure, say y
+
 config EFI
 	bool "EFI runtime service support"
 	depends on ACPI
-- 
2.15.1

WARNING: multiple messages have this Message-ID (diff)
From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: 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>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [PATCH 1/7] x86/cet: Add Kconfig option for user-mode Indirect Branch Tracking
Date: Thu,  7 Jun 2018 07:38:49 -0700	[thread overview]
Message-ID: <20180607143855.3681-2-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20180607143855.3681-1-yu-cheng.yu@intel.com>

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 return-/jmp-
+	  oriented programing attacks.
+
+	  If unsure, say y
+
 config EFI
 	bool "EFI runtime service support"
 	depends on ACPI
-- 
2.15.1

--
To unsubscribe from this list: send the line "unsubscribe linux-doc" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

  reply	other threads:[~2018-06-07 15:36 UTC|newest]

Thread overview: 32+ 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 ` Yu-cheng Yu
2018-06-07 14:38 ` Yu-cheng Yu [this message]
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
2018-06-07 16:43     ` Randy Dunlap
2018-06-07 14:38 ` [PATCH 2/7] x86/cet: User-mode indirect branch tracking support Yu-cheng Yu
2018-06-07 14:38   ` 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 14:38   ` Yu-cheng Yu
2018-06-07 18:39   ` Andy Lutomirski
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   ` Yu-cheng Yu
2018-06-07 14:38 ` [PATCH 5/7] x86: Insert endbr32/endbr64 to vDSO Yu-cheng Yu
2018-06-07 14:38   ` Yu-cheng Yu
2018-06-07 20:50   ` Andy Lutomirski
2018-06-07 20:50     ` Andy Lutomirski
2018-06-07 22:03     ` H.J. Lu
2018-06-07 22:03       ` H.J. Lu
2018-06-07 23:00       ` Andy Lutomirski
2018-06-07 23:00         ` Andy Lutomirski
2018-06-08  0:31         ` H.J. Lu
2018-06-08  0:31           ` H.J. Lu
2018-06-08  0:47           ` Andy Lutomirski
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   ` Yu-cheng Yu
2018-06-07 14:38 ` [PATCH 7/7] x86/cet: Add PTRACE interface for CET Yu-cheng Yu
2018-06-07 14:38   ` Yu-cheng Yu
2018-06-07 18:32   ` Andy Lutomirski
2018-06-07 18:32     ` Andy Lutomirski

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180607143855.3681-2-yu-cheng.yu@intel.com \
    --to=yu-cheng.yu@intel.com \
    --cc=arnd@arndb.de \
    --cc=corbet@lwn.net \
    --cc=dave.hansen@linux.intel.com \
    --cc=hjl.tools@gmail.com \
    --cc=hpa@zytor.com \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=luto@amacapital.net \
    --cc=mike.kravetz@oracle.com \
    --cc=mingo@redhat.com \
    --cc=oleg@redhat.com \
    --cc=ravi.v.shankar@intel.com \
    --cc=tglx@linutronix.de \
    --cc=vedvyas.shanbhogue@intel.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.