Re: [PATCH] x86/shstk: Enable shadow stack for x32

[Dave Hansen]

On 3/15/24 07:04, H.J. Lu wrote:
> 1. Add shadow stack support to x32 signal.
> 2. Use the 64-bit map_shadow_stack syscall for x32.
> 3. Set up shadow stack for x32.
> 
> Tested with shadow stack enabled x32 glibc on Intel Tiger Lake.

I don't think we should wire up code that's never going to get used in
practice.  I think I'd want to be sure of the existence of some
specific, real-world, long-term users of this before we add a new ABI
that we need to support forever.

Are there real users?