Re: Concerns about SFrame viability for userspace stack walking

Mark Brown <[email protected]> Fri, 31 Oct 2025 11:46:25 +0000

Newsgroups	org.kernel.vger.linux-toolchains,org.kernel.vger.linux-kernel,org.kernel.vger.linux-perf-users
Message-ID	<[email protected]>

On Thu, Oct 30, 2025 at 07:57:25PM +0100, Peter Zijlstra wrote:
> On Thu, Oct 30, 2025 at 11:31:38AM -0700, Andi Kleen wrote:

> > Not on x86 at least. All my x86 systems have it, except for a few old
> > skylakes.

> About half of my systems have CET, but I just checked, none of them
> seem to actually use userspace shadow stacks.

> AFAICT Debian hasn't build their packages with this stuff on.

It hasn't - they're starting to roll it out now in the development
distro, an actual release is a couple of years away at this point.

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