Re: [PATCH v2] x86/mm/pat: (un)track_pfn_copy() fix + doc improvements

[Ingo Molnar]

* David Hildenbrand <david@xxxxxxxxxx> wrote:

> On 09.04.25 12:32, Ingo Molnar wrote:
> > 
> > * David Hildenbrand <david@xxxxxxxxxx> wrote:
> > 
> > > We got a late smatch warning and some additional review feedback.
> > > 
> > > 	smatch warnings:
> > > 	mm/memory.c:1428 copy_page_range() error: uninitialized symbol 'pfn'.
> > > 
> > > We actually use the pfn only when it is properly initialized; however,
> > > we may pass an uninitialized value to a function -- although it will not
> > > use it that likely still is UB in C.
> > > 
> > > So let's just fix it by always initializing pfn in the caller of
> > > track_pfn_copy(), and improving the documentation of track_pfn_copy().
> > > 
> > > While at it, clarify the doc of untrack_pfn_copy(), that internal checks
> > > make sure if we actually have to untrack anything.
> > 
> > Note that the title isn't accurate anymore, it's not an 'x86/mm/pat'
> > patch, but an 'mm' patch.
> 
> Agreed. Who will take this patch? If it's Andrew, can you fixup the subject
> please?

I was assuming Andrew would pick it up:

  Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>

But can pick it up too via tip:x86/urgent.

Thanks,

	Ingo