Re: Moving mac68k to 8K pages?
David Brownlee <[email protected]> Fri, 8 Feb 2019 10:34:48 +0000
| Newsgroups | gmane.os.netbsd.ports.mac68k |
|---|---|
| Message-ID | <CAGN_6pas8FQz4x3gKopzJou6+4DqZ=XAqrnkyx-CcBr80z=jvA@mail.gmail.com> |
On Fri, 8 Feb 2019 at 07:53, Martin Husemann <[email protected]> wrote: > > On Fri, Feb 08, 2019 at 04:40:29AM +0000, John Klos wrote: > > Are there any good reasons to not switch mac68k to 8K pages, at very least > > until someone gets around to rewriting the PMAP? > > Haven't thought about it in detail but things to consider: > - it wastes a bit of space on tiny memory machines > - does it break binary comptability? I would expect that the latter *should* be fine - based on history for NetBSD/vax switching from 1k to 4k pages :) How reasonable would it to make it a explicit kernel option for m68k - defaulting to 8k, but settable to 4k specifically for low memory machines. David