Re: FreeBSD PVHVM call for testing

[Sergey Kandaurov <pluknet@gmail.com>]

On 23 May 2013 20:30, Outback Dingo <outbackdingo@gmail.com> wrote:
> On Thu, May 23, 2013 at 9:33 AM, Roger Pau Monné <roger.pau@citrix.com>wrote:
>
>> On 23/05/13 14:57, Jeroen van der Ham wrote:
>> > Hi,
>> >
>> > On 13 May 2013, at 20:32, Roger Pau Monné <roger.pau@citrix.com> wrote:
>> >> Right now the code is in a state where it can be tested by users, so we
>> >> would like to encourage FreeBSD and Xen users to test it and provide
>> >> feedback.
>> >
>> > I've just been able to install it on a VPS using the latest pvhvm_v9
>> branch.
>>
>> The branch pvhvm_v9 contains an initial implementation of PV IPIs for
>> amd64. I've now finished it and I'm going to port it to i386 also, and
>> push a new branch to the repository.
>>
>> > This is good news, because the system I had before actually had trouble
>> with the HVM kernel from 9.1 [0].
>> >
>> > I'm going to leave this running for a while and do some more tests on it.
>> >
>> > Jeroen.
>> >
>> >
>> > [0]: http://www.freebsd.org/cgi/query-pr.cgi?pr=175822
>> >
>>
>> I built the rev_9 branch on a XCP host and rebooted, however I am seeing
>
> on boot after ugen0.2: <QEMU 0.10.2> at usbus0
>
> run_interrupt_driven_hooks: still waiting after 60 seconds for
> xenbus_nop_confighook_cb
> run_interrupt_driven_hooks: still waiting after 120 seconds for
> xenbus_nop_confighook_cb
> run_interrupt_driven_hooks: still waiting after 180 seconds for
> xenbus_nop_confighook_cb
> run_interrupt_driven_hooks: still waiting after 240 seconds for
> xenbus_nop_confighook_cb
> run_interrupt_driven_hooks: still waiting after 300 seconds for
> xenbus_nop_confighook_cb
> panic: run_interrupt_driven_confighooks: waited too long
> cpuid = 0
> KDB: enter: panic
> [ thread pid 0 tid 100000 ]
> Stropped at kdb_enter +0x3b: movq $0,0xad6522(%rip)
> db>

Can you recheck this on stock HEAD?

>From your description this looks like a rather old bug seen with 8.2
or above and XCP (referenced in PR kern/164630). You can trigger it
when e.g. booting with empty cdrom.

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