RE: [Xen-ia64-devel] [PATCH]Enable xen0 smp when machine only has2 LPs

["Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>]

I only tested dom0 boot up. Seems this issue is very tricky. 
Thanks & Best Regards
-Xiantao

OTC,Intel Corporation

> -----Original Message-----
> From: Alex Williamson [mailto:alex.williamson@xxxxxx]
> Sent: 2006年6月21日 7:41
> To: Zhang, Xiantao
> Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-ia64-devel] [PATCH]Enable xen0 smp when machine only has2
> LPs
> 
> On Tue, 2006-06-20 at 18:02 +0800, Zhang, Xiantao wrote:
> > This patch intends to enable xen0's smp when machine only has 2 LPs.
> > Thanks & Best Regards
> 
> Xiantao,
> 
>    For such a simply change, this patch caused me a lot of trouble.
> When I repeatedly reboot domU, I can get it into a state reported as
> "------" by xm list.  The domU console appears hung.  I can always get
> it out of this state by running xenctx on the domain.  At that point the
> console wakes up again and I get a software watchdog oops in the domU.
> The backtrace in the oops is a standard cpu_idle kind of patch.  My HVM
> capable systems sometimes even failed to boot dom0 when I applied this
> patch.  Thanks,
> 
>       Alex
> 
> --
> Alex Williamson                             HP Open Source & Linux Org.

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