Re: [PATCH v10 07/14] unwind_user/deferred: Make unwind deferral requests NMI-safe

[Peter Zijlstra]

On Thu, Jun 19, 2025 at 10:44:27AM +0200, Peter Zijlstra wrote:

> Luckily, x86 dropped support for !CMPXCHG8B right along with !TSC. So on
> x86 we good with timestamps, even on 32bit.

Well, not entirely true, local_clock() is not guaranteed monotonic. So
you might be in for quite a bit of hurt if you rely on that.