Anthony Liguori wrote: >> the host see as i've 4 cpu. i've got a change to gives more cpu to the >> guest, what's more they starts, but after a few minutes running the >> system crash. not just the guest os but the host os crash without any >> kind of info, log or any useful info what was the cause of it, but hard >> reset helps:-((( first of all it's serious problem, even if it's a known >> bug and documented somewhere (but there is not any kind of docs about >> neither kvm nor virt-manager/libvirt and what i can find that very >> limited), since all of the new hvm cpu (which is required for kvm) has >> more core, so the guest can't use the real power of the cpu this means >> i've to put a lots of guests with one virtual cpu to the host or >> currently can't exploit these cpus. > > I'm having difficulty understanding what your problem is. Are you after i reread my sentences it was difficult for me too:-( > saying that guest SMP isn't working for you? The host OS definitely > shouldn't crash. Can you be more specific about what configs you are > using? There was a host oops fixed in kvm-36 so upgrading may help you. exactly. i've got 4 phisical core (Intel Core 2 Quad) and i try to give 4 cpus for 2 guests and 2 cpus for a third guest and restart libvirtd. the result was that even the host system crash without any stack trace or kernel panic and only the hard reset helps. -- Levente "Si vis pacem para bellum!"