[Xen-ia64-devel] A strange issue when VTI guest vcpus number is

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Subject:	[Xen-ia64-devel] A strange issue when VTI guest vcpus number is near pcpus
From:	"You, Yongkang" <yongkang.you@xxxxxxxxx>
Date:	Wed, 6 May 2009 13:46:37 +0800
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Thread-topic:	A strange issue when VTI guest vcpus number is near pcpus

Hi,

When I try recently Xen (Xen 3.4 rc3) on IA64 machine (Tiger4), I found some 
strange issue.

My two systems have 4 and 8 pcpus separately

If VTI guest's vcpus is near pcpus, guest booting will meet some issues:
1. Guest boot might be hang at "switch to new root and run init; unmounting old 
/dev ...; unmounting old /sys" for a long time.
2. After guest boot up, it might report "illegal instructions" for command or 
report "readonly filesystem". 

I didn't catch it in UP or 2 vcpus conditions. 

Looks a qemu issue? Did you meet it also?

Thanks,
Yongkang

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[Xen-ia64-devel] A strange issue when VTI guest vcpus number is near pcp