Re: [Xen-devel] Re: serial console hang in 3.0.2-2

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 7 May 2006, at 16:52, Manuel Bouyer wrote:

> Seems to be SMP-related; if I boot nosmp things are working properly 
> again.
> I'm booting with noapic (I don't have completed ioapic support yet) and
> as it's an asus P2B, acpi=ht seems to be automatically added.
>
> When the hypervisor is hung, d is still working (in fact, soft 
> interrupt are
> blocked) and I get:
The CPU is probably stuck waiting for some other CPU to run its 
smp_call_function callback handler. This may be because the other CPU 
has got interrupts permanently disabled. It's worth disassembling your 
Xen image, or adding tracing to on_selected_cpus(), to find out where 
the CPU has got stuck and what it is waiting on. Then perhaps we can 
help you some more.
Ian's suggestion of trying -unstable is perhaps also worthwhile, 
although not for the reason he states (the fix that he points out is 
not applicable to our 3.0.2 tree).
 -- Keir


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