[Bug 1047531] Re: Ubuntu 12.04 (Precise) guests can't boot on Ubuntu 10.04 (Lucid) QEMU-KVM host

[Konstantin L. Metlov]

Also the VM in hanged state uses exactly 36 Mb of memory out of
allocated 512Mb and spins indefinitely using 100% CPU (sometimes
sligntly more: 102% or 104%). Probably, this memory usage corresponds to
the kernel+initrd.

I have enabled GRUB debug output, but never seen it telling anything
about launching the kernel. So it looks that hang happens in GRUB (which
is consistent with the observation that all other Precise images hang in
the same way, irrespectively of kernel options).

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Title:
  Ubuntu 12.04 (Precise) guests can't boot on Ubuntu 10.04 (Lucid) QEMU-
  KVM host

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