From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-api@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Andy Lutomirski <luto@kernel.org>,
Balbir Singh <bsingharora@gmail.com>,
Borislav Petkov <bp@alien8.de>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Eugene Syromiatnikov <esyr@redhat.com>,
Florian Weimer <fweimer@redhat.com>,
"H.J. Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>,
Jonathan Corbet <corbet@lwn.net>,
Kees Cook <keescook@chromium.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
Nadav Amit <nadav.amit@gmail.com>,
Oleg Nesterov <oleg@redhat.com>, Pavel Machek <pavel@ucw.cz>,
Peter Zijlstra <peterz@infradead.org>,
Randy Dunlap <rdunlap@infradead.org>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com>,
Dave Martin <Dave.Martin@arm.com>,
Weijiang Yang <weijiang.yang@intel.com>,
Pengfei Xu <pengfei.xu@intel.com>,
Haitao Huang <haitao.huang@intel.com>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [PATCH v23 1/9] x86/cet/ibt: Update Kconfig for user-mode Indirect Branch Tracking
Date: Tue, 16 Mar 2021 08:13:11 -0700 [thread overview]
Message-ID: <20210316151320.6123-2-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20210316151320.6123-1-yu-cheng.yu@intel.com>
Indirect branch tracking is a hardware security feature that verifies near
indirect call/jump instructions arrive at intended targets, which are
labeled by the compiler with ENDBR opcodes. If such instructions reach
unlabeled locations, the processor raises control-protection faults.
Check the compiler is up-to-date at config time.
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2c93178262f5..96000ed48469 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1953,6 +1953,7 @@ config X86_CET
def_bool n
depends on AS_WRUSS
depends on ARCH_HAS_SHADOW_STACK
+ depends on $(cc-option,-fcf-protection)
select ARCH_USES_HIGH_VMA_FLAGS
select ARCH_MAYBE_MKWRITE
select ARCH_USE_GNU_PROPERTY
--
2.21.0
next prev parent reply other threads:[~2021-03-16 15:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 15:13 [PATCH v23 0/9] Control-flow Enforcement: Indirect Branch Tracking Yu-cheng Yu
2021-03-16 15:13 ` Yu-cheng Yu [this message]
2021-03-16 15:13 ` [PATCH v23 2/9] x86/cet/ibt: User-mode Indirect Branch Tracking support Yu-cheng Yu
2021-03-16 15:13 ` [PATCH v23 3/9] x86/cet/ibt: Handle signals for Indirect Branch Tracking Yu-cheng Yu
2021-03-16 15:13 ` [PATCH v23 4/9] x86/cet/ibt: Update ELF header parsing " Yu-cheng Yu
2021-03-16 15:13 ` [PATCH v23 5/9] x86/cet/ibt: Update arch_prctl functions " Yu-cheng Yu
2021-03-16 15:13 ` [PATCH v23 6/9] x86/entry: Introduce ENDBR macro Yu-cheng Yu
2021-03-16 15:49 ` Dave Hansen
2021-03-16 17:12 ` Yu, Yu-cheng
2021-03-16 17:28 ` Dave Hansen
2021-03-16 17:44 ` Yu, Yu-cheng
2021-03-16 17:46 ` Dave Hansen
2021-03-16 17:30 ` Borislav Petkov
2021-03-16 17:42 ` Yu, Yu-cheng
2021-03-16 19:57 ` Peter Zijlstra
2021-03-16 20:05 ` Yu, Yu-cheng
2021-03-16 20:15 ` Peter Zijlstra
2021-03-16 20:26 ` Yu, Yu-cheng
2021-03-16 21:01 ` Yu, Yu-cheng
2021-03-16 21:01 ` Peter Zijlstra
2021-03-16 15:13 ` [PATCH v23 7/9] x86/vdso/32: Add ENDBR to __kernel_vsyscall entry point Yu-cheng Yu
2021-03-16 15:13 ` [PATCH v23 8/9] x86/vdso: Insert endbr32/endbr64 to vDSO Yu-cheng Yu
2021-03-16 15:13 ` [PATCH v23 9/9] x86/vdso: Add ENDBR to __vdso_sgx_enter_enclave Yu-cheng Yu
2021-03-16 19:22 ` Jarkko Sakkinen
2021-03-16 19:27 ` Yu, Yu-cheng
2021-03-17 1:42 ` Jarkko Sakkinen
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