Re: [Xen-devel] VMX status report. Xen:25334 & Dom0:568b445...

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

> -----Original Message-----
> From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx]
> Sent: Monday, May 21, 2012 10:22 PM
> To: Wu, GabrielX
> Cc: 'xen-devel@xxxxxxxxxxxxx'; Ren, Yongjie; Liu, SongtaoX; Zhou, Chao
> Subject: Re: [Xen-devel] VMX status report. Xen:25334 & Dom0:568b445...
> 
> On Mon, May 21, 2012 at 03:05:28AM +0000, Wu, GabrielX wrote:
> > Hi all,
> >
> > This is the test report of xen-unstable tree.
> > There are two issues found and one issue got fixed.
> >
> > Version Info:
> >
> ============================================================
> =====
> > xen-changeset:   25334:f8279258e3c9
> > Dom0:          linux.git  3.4.0-rc7+ (commit: 568b445...)
> >
> ============================================================
> =====
> >
> > New issues(2)
> > ==============
> > 1. long stop during the guest boot process with qcow image
> >   http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1821
> > 2. vcpu-set doesn't take effect on guest
> >   http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1822
> 
> Does it work if you (in the guest) do
> echo 1 > /sys/../cpu9/online ?
> 
The problem is there's no hot-add vCPU in /sys/devices/system/cpu directory.
e.g. I start a guest with 2 vCPU, then I run command 'xl vcpu-set $domID 4'. 
    There are only 2 CPUs(cpu0 and cpu1) listed in /sys/devices/system/cpu 
directory.

> There is a race in the generic hotplug code.

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