RE: [Xen-devel] SR-IOV, Paravirt Guest fails to obtain IRQ afterfirst boot

["Robert Dunkley" <Robert@xxxxxxxxx>]

Hi Pasi,



Just got your email but I actually opened a Redhat bug last night:
https://bugzilla.redhat.com/show_bug.cgi?id=688673

Have collected some additional RH employees for cc but no actual comment yet, 
looking at other bugs the fact that it has not been rejected yet is probably 
encouraging.

I'm going to try to patch the Centos 5.5 Pciback module myself in the next few 
hours, hopefully that will get things up and running for me and I won't be 
waiting on Redhat. I think Redhat must have some interest in VF pass through to 
paravirt working otherwise they wouldn't have applied change set 998/999 
between kernels 194 and 247.


Thanks,

Rob

-----Original Message-----
From: Pasi Kärkkäinen [mailto:pasik@xxxxxx] 
Sent: 17 March 2011 20:43
To: Jan Beulich
Cc: Robert Dunkley; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] SR-IOV, Paravirt Guest fails to obtain IRQ afterfirst 
boot

On Thu, Mar 17, 2011 at 02:00:01PM +0000, Jan Beulich wrote:
> >>> On 17.03.11 at 13:56, "Robert Dunkley" <Robert@xxxxxxxxx> wrote:
> > Hi Jan,
> > 
> > Centos 5.5 with 2.6.18-247 RHEL kernel with iommu=pv and the 820 red 
> > hat settings among others. Default Centos 5.5 kernel doesn't detect 
> > any VF PCI deviavirt VM. Centos 5.5 with 247 kernel detects and 
> > works perfectly first boot but any subsequent boot gives  error as below:
> > msix entry 0 for dev 09:10:0 are
> > not freed before acquire again.
> > msix entry 1 for dev 09:10:0 are
> > not freed before acquire again.
> > msix entry 2 for dev 09:10:0 are
> > not freed before acquire again.
> > 
> > HVMs are fine with either kernel.
> > 
> > Can you give me any idea where the problem might be? Could this be a 
> > bios ACPI type issue?
> 
> Quite possibly your kernel is missing c/s 1070:2994d2997f9d 
> (http://xenbits.xen.org/hg/linux-2.6.18-xen.hg/rev/2994d2997f9d).
> 

Robert: Want to open RHEL5 bugzilla entry about this issue? 

-- Pasi


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