[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] Trouble booting FreeBSD i386 PV DomU

On 03/26/13 03:10, Roger Pau Monné wrote:
> On 26/03/13 10:38, Colin Percival wrote:
>> On 03/26/13 02:31, Roger Pau Monné wrote:
>>> Is Xen i386 PV broken?
>> Not completely broken, but it's certainly not in a good state.  I believe
>> it's broken with SMP, for example -- if the "crashed on cpu#7" in your
>> output means cpu#7 from the guest, it would certainly explain things.
> My guest only has one vcpu (vcpu#0):

Ok, I wasn't sure how to parse that output.

>> HVM is the way to go with FreeBSD/Xen.
> Yes, I'm already working on that, and got vector callbacks working on
> both i386 and amd64 HVM guests, thanks to Justin T. Gibbs patch. Now I
> was trying to boot a PV guest to see how much breakage this change
> introduced to PV, but I'm not able to make it work, even without my patches.
> I've replied to this xen-users thread because the author seem to have a
> working FreeBSD DomU PV guest, and I was wondering how he did it. From
> my POV it seems like PV guests hasn't been working for a long time,
> since Xen 3.3 dropped support for non-PAE guests, and the FreeBSD kernel
> is detected as non-PAE.

I had FreeBSD 8.2-RELEASE and a 9.0-CURRENT @ January 2011 running with PV
in EC2 (http://www.daemonology.net/freebsd-on-ec2/, look for "t1.micro
instances only") and that used PAE.  But it's entirely likely that something
got broken in the past two years and nobody noticed because nobody ever uses

Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid

Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.