Re: [Xen-users] Problem launching VM

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2013-04-24 at 11:04 +0100, Jonathan Gowar wrote:
> On Wed, 2013-04-24 at 10:22 +0100, Jonathan Gowar wrote:
> > Hi,
> > 
> >   I have a Debian Wheezy Linux server running Xen 4.1.  I have used Xen
> > for a couple of years now, but not on these versions, and I am having a
> > problem launching a VM.  Here is a pastie entry of xend.log
> > http://pastie.org/pastes/7707677/text
> > 
> > Many thanks,
> > 
> > Jon
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-users
> 
> Additionally, this is in xm dmesg
> 
> (XEN) Xen does not allow DomU creation on this CPU for security reasons.

This sounds like it is related to XSA-9:
http://wiki.xen.org/wiki/Security_Announcements#XSA-9_PV_guest_host_Denial_of_Service_.28AMD_erratum_.23121.29

If you are confident that the attack scenarios do not apply to you then
you can add "allow_unsafe" to your hypervisor command line.

Ian.


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