Re: [PATCH v4 09/12] powerpc/mm: replace batch->active with in_lazy_mmu_mode()

[David Hildenbrand]

On 29.10.25 11:09, Kevin Brodsky wrote:
> A per-CPU batch struct is activated when entering lazy MMU mode; its
> lifetime is the same as the lazy MMU section (it is deactivated when
> leaving the mode). Preemption is disabled in that interval to ensure
> that the per-CPU reference remains valid.
>
> The generic lazy_mmu layer now tracks whether a task is in lazy MMU
> mode. We can therefore use the generic helper in_lazy_mmu_mode()
> to tell whether a batch struct is active instead of tracking it
> explicitly.
>
> Signed-off-by: Kevin Brodsky <kevin.brodsky@xxxxxxx>
> ---

I suspect you were not able to test this on real HW. Some help from the 
ppc folks would be appreciated.

LGTM, but the interaction with pause/resume adds a bit of complication 
on top.

Acked-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers

David