Re: [PATCH] mm/Kconfig: allow user to select MIGRATION if MEMORY_FAILURE is enabled

["Lorenzo Stoakes (ARM)" <ljs@kernel.org>]

On Thu, Aug 13, 2026 at 05:23:43PM +0800, Xie Yuanbin wrote:
> Thanks for replying.
>
> On Thu, 13 Aug 2026 11:11:11 +0200, David Hildenbrand wrote:
> > On 8/13/26 09:23, Xie Yuanbin wrote:
> >> I think that just making MEMORY_FAILURE select MIGRATION is also a very
> >> good solution, and I respect the maintainers' opinion.
> >
> > There must be a good reason to do something fine grained like
> > MEMORY_FAILURE_MIGRATON, really.
> >
> > So if there is a use case out there that absolutely doesn't want
> > CONFIG_MIGRATION but does want CONFIG_MEMORY_FAILURE, we could discuss it.
>
> At least so far, I haven't encountered such a use case.
>
> > As really only softdirty needs page migration (IIRC), we could also just put
> > that under a separate config that implies CONFIG_MIGRATION, like
> > CONFIG_MEMORY_FAILURE_SOFT_OFFLINE. But I'd rather avoid that unless really
> > required.
>
> Okay, I understand it now. Making MEMORY_FAILURE select MIGRATION should
> be enough.

Agreed with all that David says, and yes that seems the best way.


--
Cheers, Lorenzo