Re: [PATCH v3 4/4] mm: pass the number of PTEs to move_pte()

[David Hildenbrand (Arm)]

On 10/28/26 14:57, Andreas Larsson wrote:
> On 2026-10-28 11:17, Imre Kaloz wrote:
>>> The biggest problem all of us with supporting old hardware is the maintanance
>>> cost. Not just core-mm, but also things like ad-hoc page table walkers you are
>>> adding we (from core-mm) might have to touch at some point.
>>>
>>> If there is no good reason for the complexity, out it goes.
>>>
>>> Because otherwise people will push more and more for removing legacy support
>>> completely, and that's not what you want, right?
>>
>> Definitely not. Fair point, I was only looking at it from the sparc
>> side, and keeping these platforms cheap to carry matters more than a
>> few percent on reclaim. B it is, then; it's below the scissors, on top
>> of 1/4-3/4. Thanks for taking the time to go through this!
>>
>> Andreas, if David is happy with it, would you take it in place of 4/4?
> I'm open to a solution like that, but it'll have to wait for the next
> round as we are far too far into the merge window. 

Fully agreed.

-- 
Cheers,

David