Re: [PATCH v15 01/26] Documentation/x86: Add CET description

[Yu, Yu-cheng]

On 11/30/2020 10:26 AM, Nick Desaulniers wrote:
> (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).

I have not built with LLVM, but think it probably will work as well.  I 
will test it.

> > 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.

I will add that to the document.

Thanks,
Yu-cheng