Re: [fedora-virt] how to active XEN on Fedora 12

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On Wed, Dec 30, 2009 at 12:21:56PM +0000, Richard W.M. Jones wrote:
> On Wed, Dec 23, 2009 at 02:23:37PM +0100, Dario Lesca wrote:
> > Thanks Boris, I use F12 on my Laptop and I want run some VM for test new
> > version of distro.
> 
> KVM is generally better for laptops because of better power
> management.  However ...
> 
> > Now I use qemu-kvm but each machine use 30/40% of CPU of host system.
> 
> Is KVM enabled?
> 
>   $ /sbin/lsmod | grep kvm
>   kvm_intel              48184  6 
>   kvm                   163952  1 kvm_intel
> 
> You should see a kvm_* module.  Does your laptop support hardware
> virtualization?  Recent hardware has much better support than the
> first generation of hardware.  Is it enabled in the laptop BIOS?
> 
> > I want use XEN to see if it works better...
> [...]
> > then I'm looking for some thing to do after this....
> 
> Basically Fedora 12 doesn't support Xen as a host.  Too bad, but this
> is because upstream Xen people didn't get their changes into the Linux
> kernel yet.
> 
> Your options are to go back to something out of date and unsupported
> (Fedora 8 IIRC was the last version of Fedora that could be used as a
> Xen host).  Or use KVM -- see above.  Or use RHEL 5 or a derivative
> where an older version of Xen is fully supported.
> 

Fedora 12 contains Xen hypervisor and tools, only dom0 kernel is
missing. 

There's a repository of xendom0 kernels as rpms, if you're willing to
install 3rdparty/testing rpms, see:

http://fedoraproject.org/wiki/Features/XenPvopsDom0

-- Pasi

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