Messages in this thread Patch in this message | | | From | Yu-cheng Yu <> | Subject | [PATCH v12 1/8] x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking | Date | Fri, 18 Sep 2020 12:23:05 -0700 |
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Introduce Kconfig option X86_INTEL_BRANCH_TRACKING_USER.
Indirect Branch Tracking (IBT) provides protection against CALL-/JMP- oriented programming attacks. It is active when the kernel has this feature enabled, and the processor and the application support it. When this feature is enabled, legacy non-IBT applications continue to work, but without IBT protection.
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> --- v10: - Change build-time CET check to config depends on.
arch/x86/Kconfig | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 6b6dad011763..b047e0a8d1c2 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1963,6 +1963,22 @@ 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 + depends on $(cc-option,-fcf-protection) + select X86_INTEL_CET + help + Indirect Branch Tracking (IBT) provides protection against + CALL-/JMP-oriented programming attacks. It is active when + the kernel has this feature enabled, and the processor and + the application support it. When this feature is enabled, + legacy non-IBT applications continue to work, but without + IBT protection. + + If unsure, say y + config EFI bool "EFI runtime service support" depends on ACPI -- 2.21.0
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