RE: [Xen-devel] wget and Zope crashes on post-2.0.6 -testing

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

 > > The last point is where we can fall down: if the TS bit in fact 
> > *isn;t* set, then we are screwed for all time. The kernel 
> will never 
> > realise a process is using the FPU because we will never 
> take the TS 
> > fault, because the TS bit is clear. Thus state doesn;t get 
> > saved/restored during context switch and the TS bit never 
> gets set. So 
> > its a self perpetuating state once you're in it.
> 
> Say I have an xen machine with several domains, some with 
> kernels that have the FPU bug fix and some without. Can a 
> domain with the buggy kernel upset a domain with a bug free kernel?
> Or does this just affect processes within one domain?

It just affects the one domain. 

Best,
Ian

> I might want to be a bit more hasty in upgrading all the 
> kernels if a buggy kernel/domain can upset a good kernel/domain.
> 
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