Re: Concerns about SFrame viability for userspace stack walking

[Andi Kleen]

On Thu, Oct 30, 2025 at 06:07:49PM +0000, Mark Brown wrote:
> On Thu, Oct 30, 2025 at 10:53:13AM -0700, Andi Kleen wrote:
> 
> > IMNSHO the whole sframe effort is misguided because all the major ISAs do have
> > shadow stack hardware support now which is generally a better option. 
> > It would be better to invest effort in deploying that widely.
> 
> It's going to take a *considerable* time for the hardware support to
> become standard.

Optimizing for the past instead of the future?

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

-Andi