Re: enforcing page color matches

[Eduardo Horvath <eeh%NetBSD.org@localhost>]

On Wed, 25 May 2011, Matt Thomas wrote:

> I'm using a MIPS 74K which needs strict page-coloring enforcement (4 colors 
> for its Icache and 2 colors for its Dcache) so this is important to me.  If 
> this can be enforced, the code to deal with bad colors can be removed and 
> that will greatly simplify the mips pmap code.

I don't think that you can get rid of the page coloring code.  What 
happens if you have two processes that have the same file mmap()ed to 
different page colors?  But reducing the need for it is good.

Eduardo