[RFC v1 PATCH 0/11] Optimize this_cpu_*() ops for non-x86 (ARM64 for this series)

[Heiko Carstens]

On Wed, May 13, 2026 at 05:00:19PM -0700, Yang Shi wrote:
> On 5/12/26 2:02 AM, David Hildenbrand (Arm) wrote:
> > There was quite some feedback during the LSF/MM session, what's the current plan?
...
> I'm not sure whether S390 folks will implement this on S390 or not, anyway
> they are cc'ed.

I'm not sure yet, however after I had a look at the architecture documentation
a couple of weeks ago, I think it shouldn't be too hard to get this working on
s390 as well. I was a bit concerned about TLB flushing, if changes to the
kernel mapping happen with per-cpu page tables, but as of now I believe this
shouldn't cause any harm (famous last words...).