Re: [PATCH v7 2/4] s390/mm: Batch PTE updates in lazy MMU mode

[Heiko Carstens]

On Thu, Oct 01, 2026 at 11:20:17AM +0200, Alexander Gordeev wrote:
> On Thu, Oct 01, 2026 at 10:21:43AM +0200, Heiko Carstens wrote:
> > On Thu, Oct 01, 2026 at 10:00:55AM +0200, Alexander Gordeev wrote:
> > > On Mon, Aug 24, 2026 at 12:40:48PM +0200, Heiko Carstens wrote:
> > Not really. But why is lazy_mmu_count 32 bit? Do you expect a nesting
> > level of 2^32? :) If you would reduce that to one byte you could use
> > tmy or cliy.
> 
> Good point. But still, do you think it worth dropping the KASAN check?

KASAN check for lowcore? I don't think we care - this is initialized to zero
anyway, so what could go wrong? Also given how frequently these operations are
used, yes, please drop KASAN checks.