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Date:      Fri, 27 Sep 2013 20:29:48 +0530
From:      Shanker Balan <mail@shankerbalan.net>
To:        "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>
Subject:   Re: Latest current -CURRENT (rev 255904) panics with "device hyperv" on XenServer 6.2
Message-ID:  <CA02B4EC-B187-415F-BEBF-76CE3A84671D@shankerbalan.net>
In-Reply-To: <52459B47.8030101@citrix.com>
References:  <7943FB36-C6F4-4529-A805-2C467192231F@shankerbalan.net> <52459B47.8030101@citrix.com>

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On 27-Sep-2013, at 8:20 PM, Roger Pau Monn=E9 <roger.pau@citrix.com> =
wrote:

> On 27/09/13 08:16, Shanker Balan wrote:
>> Helo,
>>=20
>> Now that XENHVM has been merged into the GENERIC kernel, I recompiled =
todays -CURRENT (rev 255904)
>> and hit the following panic. It seeems to be HyperV related.
>>=20
>> GENERIC without "device hyperv" works properly. The hypervisor is =
XenServer 6.2.
>>=20
>> # HyperV drivers
>> device          hyperv          # HyperV drivers=20
>>=20
>> Panic screenshots with backtrace at http://imgur.com/cZsDsKE&VCkh4VS
>=20
> Hello,
>=20
> This is because XenServer enables viridian by default when running HVM
> guests. That makes Xen also announce itself as HyperV for =
compatibility
> reasons, as a workaround you can try to disable viridian support (not
> sure if this is possible on XenServer).
>=20
> I'm attaching a patch that should solve the problem, Ccing the virt
> mailing list and the persons that I think are involved in the HyperV
> support for FreeBSD.


Hi Roger,

Thank you very much for looking into the issue.

Can I have a SVN version of the patch? "patch" does not seem to like
the diff (or maybe I am using it incorrectly)

root@fxen1:/usr/src # patch -n  < ~/xen_hyperv.patch
Hmm...  I can't seem to find a patch in there anywhere.
root@fxen1:/usr/src #=20


Regards.
@shankerbalan




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