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Re: [Xen-ia64-devel] [PATCH]Enable xen0 smp when machine only has 2 LPs

from [Alex Williamson]

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To:	"Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
Subject:	Re: [Xen-ia64-devel] [PATCH]Enable xen0 smp when machine only has 2 LPs
From:	Alex Williamson <alex.williamson@xxxxxx>
Date:	Tue, 20 Jun 2006 17:41:22 -0600
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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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