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Re: [Xen-devel] [PATCH]Check the values of MAX_VIRT_CPUS and NR_CPUSfor

from [Tristan Gingold]

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To:	"Tian, Kevin" <kevin.tian@xxxxxxxxx>, "Atsushi SAKAI" <sakaia@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] [PATCH]Check the values of MAX_VIRT_CPUS and NR_CPUSfor SMP
From:	Tristan Gingold <Tristan.Gingold@xxxxxxxx>
Date:	Fri, 21 Apr 2006 08:59:50 +0200
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Le Vendredi 21 Avril 2006 05:46, Tian, Kevin a écrit :
> Hi, Atsushi,
>       I'm still not clear about the relationship between
> MAX_VIRT_CPUS and NR_CPUS. Why do you need to add that
> check to force MAX_VIRT_CPUS>=NR_CPUS?
The simple answer is idle domain.  idle domain is SMP-guest for a long time, 
because it creates a VCPU for each CPUS!

See also Keir message.

Tristan.



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