Re: [Xen-devel] Re: [Xen-users] Nested Virtualisation question

[Jeroen Groenewegen van der Weyden <groen692@xxxxxxxxx>]

The result with c/s23197

Regular domain now start, en stop normaly, (xl seems to have a problem 
though, after domain closes a domain null remains in de xl list/ xmdoe 
not have this.)
for nestedVM I added the "nestedhvm=1" in the config file of the domain. 
but the domain does not start because of "invalid argument"
+++++++++ beging console
hydra:/etc/xen/vm # xm create groscNestedVM
Using config file "./groscNestedVM".
Error: (22, 'Invalid argument')
+++++++++ end console

+++++++++ begin xend.log
hydra:/etc/xen/vm # tail /var/log/xen/xend.log
    dominfo = XendDomainInfo.create(config)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", 
line 106, in create
    vm.start()
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", 
line 473, in start
    XendTask.log_progress(0, 30, self._constructDomain)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendTask.py", line 
209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomainInfo.py", 
line 2598, in _constructDomain
    xc.hvm_set_param(self.domid, HVM_PARAM_NESTEDHVM, long(nestedhvm))
Error: (22, 'Invalid argument')
+++++++++++ end xend.log


Op 7-4-2011 12:29, Tim Deegan schreef:
> At 08:14 +0100 on 07 Apr (1302164093), Keir Fraser wrote:
> > On 07/04/2011 08:09, "Keir Fraser"<keir.xen@xxxxxxxxx>  wrote:
> > > Probably the same as this, happening often in the automated tests:
> > Likely reason: nestedhvm_vcpu_initialise() being called unconditionally in
> > hvm_vcpu_initialise() even though nestedhvm has not been configured for this
> > domain. This then fails because there is no nestedhvm handler for Intel yet.
> This bug should be fixed by 23175:e5a750d1bf9b, arriving at a staging
> tree near you at any moment.
>
> > And beyond that it's most likely an issue of a broken failure path, or a
> > problem in the HAP code with cleaning up a half-created guest.
> This one I'll look into now.
>
> Tim.

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