Re: [Xen-devel] CONFIG_SMP or !CONFIG_SMP... that is the question. WAS: something about ia64 that nobody would read :-)

[Christian Limpach <christian.limpach@xxxxxxxxx>]

On 5/11/05, Magenheimer, Dan (HP Labs Fort Collins)
<dan.magenheimer@xxxxxx> wrote:
> > From: Ian Pratt [mailto:m+Ian.Pratt@xxxxxxxxxxxx]
> 
> > It's daft that we even have a CONFIG_SMP option in Xen. It spends most
> > of its time broken because no-one using x86 builds it, and you won't
> > even be able to buy any non SMP hardware before long...
> >
> > I'd vote for expunging CONFIG_SMP.
> 
> I've heard its not uncommon when debugging nasty problems on Linux
> to turn off SMP as it simplifies the world considerably.

I would either run on non-SMP hardware, use the nosmp option or if
that's gone, just nobble the code that discovers multiple CPUs -- all
these are definitely preferable to compiling Xen without CONFIG_SMP
since that might change the code so much that the bug might not occur
anymore.

    christian

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