Re: [Xen-devel] pv-ops domU not working with MSI interrupts on Nehalem

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

On Mon, Oct 11, 2010 at 02:12:22PM -0700, Bruce Edge wrote:
> On Fri, Oct 1, 2010 at 2:11 PM, Konrad Rzeszutek Wilk
> <konrad.wilk@xxxxxxxxxx> wrote:
> > On Mon, Sep 27, 2010 at 08:52:39AM -0700, Bruce Edge wrote:
> >> One of our developers who is working on a tachyon driver is
> >> complaining that the pvops domU kernel is not working for these MSI
> >> interrupts.
> >> This is using the current head of xen/2.6.32.x on both a single
> >> Nahelam 920 and a dual E5540. This behavior is consistent with Xen
> >> 4.0.1, 4.0.2.rc1-pre and 4.1.
> >
> >
> > I just checked on my SuperMicro X8DTN, this combination
> >  - For Dom0, git commit fe999249 (2.6.32.18)
> >  - For DomU, devel/xen-pcifront-0.6 or devel/xen-pcifront-0.7
> >  - For Hypervisor I used cs 21976, but found that the latest (22155) works 
> > too
> >
> > with which where I passed in PCI devices with legacy IRQ, MSI, and MSI-X. I 
> > tried
> > a combination of doing this with IOMMU (VT-d) and without - both cases 
> > these devices:
> >
> > 00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
> > Controller #1 (rev 02)
> > 00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
> > Controller #2 (rev 02)
> > 00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
> > Controller #3 (rev 02)
> > 00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
> > Controller #1 (rev 02)
> > 03:00.0 Ethernet controller: Intel Corporation 82572EI Gigabit Ethernet 
> > Controller (Copper) (rev 06)
> > 0a:00.1 Ethernet controller: Intel Corporation 82575EB Gigabit Network 
> > Connection (rev 02)
> >
> > worked just fine (either defining pci=["..."] or just using pci-attach).
> >
> > But if I use the latest xen/next or xen/stable-2.6.32.x it does not look
> > that happy :-(
> >
> >
> 
> Konrad,
> To try eliminate the remaining differences here, could you post your
> dom0/domU config files?

Sure. See attached
> I'd like to build the same kernels to get an apples->apples comparison.
> 
> Also, could you include your grub info and domU cfg file?
> 
> These may eliminate some of the remaining diffs in the configs and
> show why your's works while mine does not.
> 
> Thanks
> 
> -Bruce

Attachment: dom0-config
Description: Text document

Attachment: domU-config
Description: Text document

Attachment: pv-start.xm
Description: Text document

Attachment: hvm-start.xm
Description: Text document

Attachment: lspci
Description: Text document

Attachment: menu.lst
Description: Text document

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