Re: [PATCH 0/5] Rewrite Motorola MMU page-table layout

Peter Zijlstra
2020-01-29T19:31:21Z

On Thu, Jan 30, 2020 at 07:52:11AM +1300, Michael Schmitz wrote:
> Peter,
>
> On Thu, Jan 30, 2020 at 12:54 AM Peter Zijlstra <peterz@infradead.org> wrote:
> >
> > On Wed, Jan 29, 2020 at 11:49:13AM +0100, John Paul Adrian Glaubitz wrote:
> >
> > > > [1] https://wiki.debian.org/M68k/QemuSystemM68k
> >
> > Now, if only debian would actually ship that :/
> >
> > AFAICT that emulates a q800 which is another 68040 and should thus not
> > differ from ARAnyM.
> >
> > I'm fairly confident in the 040 bits, it's the 020/030 things that need
> > coverage.
>
> I'll take a look - unless this eats up way more kernel memory for page
> tables, it should still boot on my Falcon.

It should actually be better in most cases I think, since we no longer
require all 16 pte-tables to map consecutive (virtual) memory.