Re: [PATCH] qemu does not have dcache aliases

[Thiemo Seufer <ths@networkno.de>]

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.


Thiemo