On Mon, 21 Aug 2006, Thiemo Seufer wrote:
> Ralf Baechle wrote:
> > On Mon, Aug 21, 2006 at 04:16:21PM +0100, Maciej W. Rozycki wrote:
> >
> > > > Well, the QEMU cpu has 2-way 2kB dcache... does not have aliasing
> > > > anyway. :-)
> > >
> > > I don't think emulating a bigger cache so that we can add aliases should
> > > be *that* difficult. Adding aliases themselves might be a bit trickier,
> > > but the gain would certainly justify the hassle, wouldn't it?
> >
> > The cache lookup for every access would have serious impact on performance.
> > The question is, is it worth the price? Would such patches be acceptable
> > by the upstream qemu maintainers?
>
> Likely not, given that performance is the prime criterion there.
It depends. If you just want to run MIPS Linux, yes.
If you want to debug the kernel on a MIPS core with cache aliasing[*], no.
[*] Replace with whatever slow-to-emulate and hard-to-debug feature.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
