Re: [CFT] MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself

Russell King
2010-01-20T16:55:06Z

On Wed, Jan 20, 2010 at 05:45:34PM +0100, Geert Uytterhoeven wrote:
> > diff --git a/Documentation/cachetlb.txt b/Documentation/cachetlb.txt
> > index da42ab4..74a8b6f 100644
> > --- a/Documentation/cachetlb.txt
> > +++ b/Documentation/cachetlb.txt
> > @@ -88,12 +88,12 @@ changes occur:
> >        This is used primarily during fault processing.
> >
> >  5) void update_mmu_cache(struct vm_area_struct *vma,
> > -                        unsigned long address, pte_t pte)
> > +                        unsigned long address, pte_t *ptep)
> >
> >        At the end of every page fault, this routine is invoked to
> >        tell the architecture specific code that a translation
> > -       described by "pte" now exists at virtual address "address"
> > -       for address space "vma->vm_mm", in the software page tables.
> > +       now exists at virtual address "address" for address space
> > +       "vma->vm_mm", in the software page tables.
> >
> >        A port may use this information in any way it so chooses.
> >        For example, it could use this event to pre-load TLB
>
> Now the documentation no longer mentions what the 3rd parameter is used for?

I'm open to suggestions for a suitable description for it.