Avi Kivity schrieb:
So the above says I may have some problems.
Right, it's not safe in general. It may work if the guest doesn't use
NX. It may also work if the guest does not rely on NX working properly.
Although I think my guests don't use it, you never know.
Is it possible to disable NX for chosen guests?
On the other hand, FAQ below seems to indicate that migration on 64
bit hosts should be fine (even when they don't support NX?), only 32
bit hosts may have problems:
http://www.linux-kvm.org/page/FAQ
Yes. There may be issues on 32-bit Intel hosts which don't support NX
(or XD), but for 64-bit hosts back and forth migration should work
well. Migration of 32-bit guests should work between 32-bit hosts and
64-bit hosts.
Looks like that paragraph assumes that all 64-bit hosts have NX. Your
/proc/cpuinfo proves otherwise.
--
Tomasz Chmielewski
http://wpkg.org
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