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Re: [Xen-devel] HVM domains crash after upgrade from XEN 4.5.1 to 4.5.2
Am 15.11.15 um 16:12 schrieb Andrew Cooper:
[big snip]
Great - so confirms the issue as a SeaBIOS interaction issue,
rather than a hypervisor regression.
As I said before, I am still certain that a guest should not be
able to get itself into the crashing state (short of a hardware
errata), so I still suspect that there is a latent hypervisor
emulation bug which has been tickled by the SeaBIOS update.
Would you please mind running the bad HVMLoader on Xen 4.5.2 with
hvm_debug=0xc3f ? I am still hoping that that will shed some light
on SeaBIOS actions just leading up to the crash.
Hi Andrew,
Please see the attached two files. One is the dmesg from booting the
system. This looks pretty normal in my view. The other is the output
of "xl dmesg" which is most likely what you were after. It's
probably worth noting that the "traps.c" output between lines 259
and 314 and again between lines 346 and 353 seem to be xen-4.5.2
specific and don't show up under xen-4.5.1, but that may not be of
any relevance for the SeaBIOS issue we are experiencing. Though I'd
still be interested to know whether that's anything for me to worry
about ...
Are you able to experiment with newer versions of Xen? It would
be interesting to see whether the issue is still present in Xen
4.6
Currently xen-4.6 is not stable in gentoo and I try to stick to
stable packages as much as possible. But in case the above does not
help you any further, I am happy to give this a try as well. Would
this just be a straightforward test to see whether it works at all
or would you require debug symbols as well?
Many thanks again and best regards Atom2
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Attachment:
dmesg
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xl.dmesg
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