Re: [Xen-devel] Xen4.2-rc3 test result

["Ren, Yongjie" <yongjie.ren@xxxxxxxxx>]

> -----Original Message-----
> From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxx]
> Sent: Friday, August 31, 2012 11:19 PM
> To: Ren, Yongjie
> Cc: 'xen-devel'; Keir (Xen.org); 'Jan Beulich'; 'Konrad Rzeszutek Wilk'
> Subject: Re: Xen4.2-rc3 test result
> 
> On Fri, 2012-08-31 at 08:27 +0100, Ren, Yongjie wrote:
> > 3. 'xl vcpu-set' can't decrease the vCPU number of a HVM guest
> >   http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1822
> 
> I've only just noticed that this has changed from the previous
> description which was "vcpu-set doesn't take effect on guest".
> 
Sorry. It's me who changed its description. :-)
vCPU number increment works fine, while decrement can't work.

> Have we ever supported HVM guest CPU remove? I thought not.
> 
> http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1822#c3 seems to
> describe the behaviour I would expect.
> 
If we don't want to support HVM guest CPU remove in near future, I want to 
close this bug.

> If this is supposed to be an existing feature then is this a regression
> with xl vs xm or from 4.1 to 4.2?
> 
No, it's not a regression from 4.1 to 4.2.
Neither Xen 4.1 nor 4.2 supports HVM guest CPU remove with xm or xl.

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