Messages in this thread | | | Date | Fri, 2 Dec 2022 18:20:48 -0800 | From | Kees Cook <> | Subject | Re: [PATCH v4 02/39] x86/shstk: Add Kconfig option for Shadow Stack |
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On Fri, Dec 02, 2022 at 04:35:29PM -0800, Rick Edgecombe wrote: > From: Yu-cheng Yu <yu-cheng.yu@intel.com> > > Shadow Stack provides protection for applications against function return > address corruption. It is active when the processor supports it, the > kernel has CONFIG_X86_SHADOW_STACK enabled, and the application is built > for the feature. This is only implemented for the 64-bit kernel. When it > is enabled, legacy non-Shadow Stack applications continue to work, but > without protection. > > Since there is another feature that utilizes CET (Kernel IBT) that will > share implementation with Shadow Stacks, create CONFIG_CET to signify > that at least one CET feature is configured. > > Tested-by: Pengfei Xu <pengfei.xu@intel.com> > Tested-by: John Allen <john.allen@amd.com> > Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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