Re: [Xen-devel] [BUG] PCI passtrough causes driver crash in DomU (Xen 4.3, Linux kernel 3.12)

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Mar 7, 2014 7:04 AM, Jonas Meurer <jonas@xxxxxxxxxxxxxxx> wrote:
>
> Am 07.03.2014 12:54, schrieb Jonas Meurer: 
> > as already written to xen-users a few days ago, I've troubles using pci 
> > passthrough for an Intel 82574L ethernet device (kernel module e1000e). 
> > The device is passed through by xen-pciback, and can be seen by 'lspci' 
> > inside the DomU. Still, the corresponding network interface doesn't 
> > appear in /proc/net/dev and even more striking, the DomU kernel driver 
> > crashes with a traceback. 
> > 
> > All this happens on a Debian/Jessie Dom0 with Xen 4.3 and Linux kernel 
> > 3.12. The DomU in question has a similar Debian/Jessie setup. 
> >

This was fixed in 3.14 I believe by me. Is it possible for you to use that 
version?

> > I searched the archives for similar issues and found the following 
> > thread from October 2013 that describes a similar issue starting with 
> > Linux kernel 3.8: 
> > http://thread.gmane.org/gmane.comp.emulators.xen.user/80672 
>
> Just a quick follow-up: After some further searching I found the 
> following thread: 
> http://thread.gmane.org/gmane.comp.emulators.xen.user/80176 
>
> In this thread, Ian Campbell suggests to disable MSI for the guest, and 
> the submitter replies that it fixed the issue for him. So indeed it 
> seems to me like MSI in DomU is the cause for trouble here. I'll give 
> the suggested workaround a try within the next days and report back if 
> it works for me as well. 
>
> Kind regards, 
> jonas 
>
>
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