Re: [GIT PULL] x86/shstk change for v6.10

From: Linus Torvalds
Date: Mon May 13 2024 - 22:38:42 EST


On Mon, 13 May 2024 at 01:13, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
>
> Enable shadow stacks for x32.
>
> While we normally don't do such feature-enabling on 32-bit
> kernels anymore, this change is small, straightforward & tested on
> upstream glibc.

Color me confused.

"feature-enabling on 32-bit kernels"

This is not for 32-bit kernels, as far as I can tell. This is just the
x32 user mode for x86-64 kernels.

Or am I missing something?

I've pulled this, but does anybody actually use x32? I feel like it
was a failed experiment. No?

Linus