Re: [PATCH RESEND 1/2] x86/locking: Use ALT_OUTPUT_SP() for percpu_{,try_}cmpxchg{64,128}_op()

[Uros Bizjak <ubizjak@xxxxxxxxx>]

On Fri, Feb 14, 2025 at 7:22 PM Christoph Lameter (Ampere)
<cl@xxxxxxxxxx> wrote:
>
> On Thu, 13 Feb 2025, Uros Bizjak wrote:
>
> > OTOH, all recent x86_64 processors support CMPXCHG128 insn, so the
> > call alternative will be rarely used.
>
> Do we still support processors without cmpxchg128? If not then lets just
> drop the calls from the kernel.

I'm not aware of any discussion about that decision.

Thanks,
Uros.