Comment 11 for bug 1025188

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Serge Hallyn (serge-hallyn) wrote : Re: [Bug 1025188] Re: qemu-kvm : Ubuntu 12.04 (host) / Centos 6.3 (guest) rebooting from guest gets stuck in a seabios/grub loop - cannot initialise kernel (10.04 is fine)

Quoting yossarian_uk (<email address hidden>):
> I have a 'solution' - credits to Marcelo Tosatti on the KVM mailing list
>
> ----------------------------------------
> Can you disable kvmclock? (by appending "no-kvmclock" to the end of the
> "kernel" line of 2.6.32-279.1.1.el6 entry in /boot/grub/menu.lst).
> ----------------------------------------
>
> i.e add no-kvmclock to the kernel boot line in grub.
>
> I have rebooted over 20 X now.
>
> Does this indicate the bug is centos kernel related?

Sounds like it. If that is the problem, you may be able to turn off
cpu frequency scaling on the host to avoid having to make changes in
the guest.