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xen-users
Re: [Xen-users] Can't get Dom0 PV_OPS working properly
----- Original Message ----
> From: Sergey Tovpeko <tsv.devel@xxxxxxxxx>
> To: Ian Murray <murrayie@xxxxxxxxxxx>
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Sent: Thu, 13 January, 2011 13:14:27
> Subject: Re: [Xen-users] Can't get Dom0 PV_OPS working properly
>
>
> > I had a reliable system running Xen 3.4.3 (GitCo) using the CentOS Xen
>kernel (5.5). I wanted to do some PCI passthrough but I got an issue with
>MMIO
>(or similar). Google told me that that I had to use the Xen 2.6.18 or PV_Ops
>kernel.
>
> > I downloaded the "Jeremy" PV_OPS kernel and compiled it okay, having
>followed the Wiki entry instructions (I think!). I read somewhere that I
>
> > should go to 4.0.1 Xen, which I did. The kernel runs fine as a standalone
>kernel
>
> > and boots under Xen.
> >
> > I am having the the following issues:-
> >
> > * I can't get any screen console output (despite console=hvc0 at the dom0
>kernel
>
> > line)
> >
> > * PV VM's fail to start properly. As soon as they start, they sit at 100%
>CPU according to xm top and don't progress. A Windows HVM guest appears to
>start okay. I haven't tried any other HVM. I have tried PV guests based on
>CentOS kernel and Ubuntu 10.10 PV_OPS, which do the same.
> >
> > I tried to look at the various logs but I don't see anything that gives me
> > a
>clue, but I am not Xen expert to know what I am looking for.
> >
> > When I revert back to 4.0.1 + CentOS's Xen kernel as Dom0, all VM's start
>and operate properly.
> >
> > Any advice is much appreciated.
> >
> > Thanks in advance,
> >
> > Ian.
> >
> Hello, Ian!
>
> As I understood correctly your main point is to have the ability to use PCI
>passthrogh.
>
> It appears to be a problem in Jeremy's pv_ops kernel as Dom0 to run PV
>domains. I could propose you to try 2.6.18 Dom0 if it only suits for you.
>
> http://xenbits.xensource.com/linux-2.6.18-xen.hg
>
> To download it you can use Mercurial tool with
> hg clone http://xenbits.xensource.com/linux-2.6.18-xen.hg
>
>
>
Hi, thanks for the response!
I was considering that but I was worried about the drivers being old. The
server
works fine with CentOS but I think I am relying on a back-ported driver
(Forcedeth).
are we saying that there are known issues around running PV VM's and the PV_OPS
kernel?
Thanks again,
Ian.
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