Re: [PATCH RESEND 1/2] x86/locking: Use ALT_OUTPUT_SP() for percpu_{,try_}cmpxchg{64,128}_op()
From: Christoph Lameter (Ampere)
Date: Fri Feb 14 2025 - 13:32:04 EST
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.