Re: [PATCH v5 4/8] mm: add a template-based fast path for zone-device page init

On Tue, 7 Jul 2026 13:06:02 +1000, [email protected] wrote:

> > > The whole bunch of template functions look like it could be useful for
> > > initialization of the non-zone-device struct pages as well.
> > >
> > > As I mentioned previously, it's interesting to see if this approach speeds
> > > up normal memory map initialization as well. If if does could have a single
> > > set of the template functions.
> >
> > Thanks for the suggestion. I agree this is worth exploring.
> >
> > For this series, I would prefer to keep the scope limited to the
> > ZONE_DEVICE initialization path and get that part settled first.
> 
> I think that makes sense, especially as my initial perf testing with other types
> of ZONE_DEVICE pages without altmap didn't show much of a perf impact. Meaning
> it might not be so useful for normal page init.
> 
> > After this series is settled, I plan to look into whether a similar
> > template-based approach can also help normal page initialization. If it
> > shows a real benefit there as well, I can follow up with a separate
> > series.
> 
> I agree it would be interesting though, please let us know what you find one way
> or the other.

Thanks. I will keep this series focused on the pmem-oriented
ZONE_DEVICE path for now, and I will report back separately if the
follow-up work on normal page initialization turns up anything useful,
positive or negative.

Thanks,
Zhe