Re: CVS commit: [cherry-xenmp] src/sys/arch/xen

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Jun 26, 2011 at 05:57:37PM +0300, Jukka Ruohonen wrote:
> On Sun, Jun 26, 2011 at 04:39:55PM +0200, Manuel Bouyer wrote:
> > Also, you seem to assume that all x86 CPUs on today's market are muticore;
> > this is not true.
> 
> No, I don't assume that. My reasoning is more like: this is one of those
> seldom tested code paths; why can't there be a single source for UP/MP x86? 
> What disadvantages -- if any -- there are for UP running MULTIPROCESSOR?
> Is it worth to compile non-MULTIPROCESSOR kernel for UP systems, and why?
> Are there any reliability concerns involved in doing that?

No reliability, but eventually bloat (and so speed).
Also, MULTIPROCESSOR on Xen is the seldom tested code path, that's why
I want to keep the ability to run !MULTIPROCESSOR kernels for some time.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
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