Messages in this thread Patch in this message |  | | From | Yu-cheng Yu <> | Subject | [PATCH v17 1/7] x86/cet/ibt: Update Kconfig for user-mode Indirect Branch Tracking | Date | Tue, 29 Dec 2020 13:33:44 -0800 |
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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> --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index b26c79c87558..d19f8aa381db 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1961,6 +1961,7 @@ config X86_CET_USER def_bool n depends on CPU_SUP_INTEL && X86_64 depends on AS_WRUSS + depends on $(cc-option,-fcf-protection) select ARCH_USES_HIGH_VMA_FLAGS select ARCH_HAS_SHADOW_STACK select ARCH_MAYBE_MKWRITE -- 2.21.0
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