Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 5 Apr 2014 15:34:45 +0200
From:      Jeroen van der Ham <jeroen@dckd.nl>
To:        Jonni Nakari <jonni@egarden.fi>
Cc:        freebsd-xen@freebsd.org
Subject:   Re: Panics when booting i386 paravirtualized FreeBSD
Message-ID:  <CD929C79-BB6E-4B64-93B4-EE454723991C@dckd.nl>
In-Reply-To: <533FCFC3.5060601@egarden.fi>
References:  <533FCFC3.5060601@egarden.fi>

next in thread | previous in thread | raw e-mail | index | archive | help
Hi,

On 5 Apr 2014, at 11:41, Jonni Nakari <jonni@egarden.fi> wrote:

> The machine is not capable of running HVM virtualized (no VT-x/AMD-V) =
so I would like to get paravirtualized version of FreeBSD running, but =
it seems to me that the state of PV FreeBSD is quite bad currently. If I =
manage to get the DomU running, can I expect it to support multiple =
processors? Can it handle more than 4 GB of RAM? I read from a previous =
post to this list that multiprocessor support might be broken, but that =
message was from over a year ago. Also the maximum RAM support support =
comes from an old source. Ideally I would like the FreeBSD DomU to serve =
ZVOLs and NFS to other DomUs.

Whether or not you can run HVM does not depend on the CPU, but on XEN =
and which loader you use (e.g. qemuloader). So the best thing you can do =
is actually to run a HVM machine and use the stock kernel. That =
automatically detects which PVHVM stuff may be available and uses it =
when it is there.

It should support multiple processors just fine, I have not tested the =
RAM amount myself, but don=92t see a reason why it would be a problem.

most important part of my config is this:

kernel =3D '/usr/lib/xen-4.0/boot/hvmloader'
device_model =3D '/usr/lib/xen-4.0/bin/qemu-dm'
builder =3D =91hvm'


Regards,
Jeroen.




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CD929C79-BB6E-4B64-93B4-EE454723991C>