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

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Message-ID: <CAHk-=wiAXOLja2AqBzPZE+k9DKX0wjBGKZT+m2DN_hariyA0Pw@mail.gmail.com>
Date: Mon, 13 May 2024 19:38:13 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org, "the arch/x86 maintainers" <x86@...nel.org>, 
	"H.J. Lu" <hjl.tools@...il.com>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [GIT PULL] x86/shstk change for v6.10

On Mon, 13 May 2024 at 01:13, Ingo Molnar <mingo@...nel.org> 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