(In response to https://lore.kernel.org/lkml/20201110162211.9207-2-yu-cheng.yu@xxxxxxxxx/) > These need to be enabled to build a CET-enabled kernel, and Binutils v2.31 > and GCC v8.1 or later are required to build a CET kernel. What about LLVM? Surely CrOS might be of interest to ship this on (we ship the equivalent for aarch64 on Android). > An application's CET capability is marked in its ELF header and can be > verified from the following command output, in the NT_GNU_PROPERTY_TYPE_0 > field: > > readelf -n <application> | grep SHSTK > properties: x86 feature: IBT, SHSTK Same for llvm-readelf.