RE: [Xen-devel] Xen hangs up when restore Domain-0 from UP to SMP.

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

> I used xm vcpu-set to change the number of CPUs assigned to domain-0
frm 4
> to 1 by using the command "xm vcpu-set Domain-0 1". Xen domain0 works
> properly. But when I try to re-assign 4 CPUs to domain0 by using "xm
> vcpu-set Domain-0 4". Xen hangs up and the whole system is dead.
> 
> Could anyone here explain why this will happen?

It shouldn't. What version of Xen?

Please can you try a debug=y build, and then get a serial line on the
machine and access the xen emergency console and hit 'q' and 'd' a few
times and post the result.

Thanks,
Ian

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