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Date:      Thu, 23 May 2013 20:48:15 +0400
From:      Sergey Kandaurov <pluknet@gmail.com>
To:        Outback Dingo <outbackdingo@gmail.com>
Cc:        "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>, "xen-users@lists.xen.org" <xen-users@lists.xen.org>, xen-devel <xen-devel@lists.xen.org>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>
Subject:   Re: FreeBSD PVHVM call for testing
Message-ID:  <CAE-mSOJN7UgOVBHWB66-OHOw9kn3_jg5bcjWNoPO0tRX3snF8w@mail.gmail.com>
In-Reply-To: <CAKYr3zyB-9FOUwAgbq19rMNoxb5XEzHP5Wa0RiiGYJ_XcG7VbA@mail.gmail.com>
References:  <519131D8.9010307@citrix.com> <616EE8A8-78BA-46E6-90AA-4A22160289DF@dckd.nl> <519E1AA6.2060808@citrix.com> <CAKYr3zyB-9FOUwAgbq19rMNoxb5XEzHP5Wa0RiiGYJ_XcG7VbA@mail.gmail.com>

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On 23 May 2013 20:30, Outback Dingo <outbackdingo@gmail.com> wrote:
> On Thu, May 23, 2013 at 9:33 AM, Roger Pau Monn=E9 <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 Monn=E9 <roger.pau@citrix.com> wro=
te:
>> >> 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 troubl=
e
>> 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=3D175822
>> >
>>
>> 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 =3D 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.

--=20
wbr,
pluknet



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