From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: MSIX allocation failure on 2.6.31.13 PV domU
Date: Sat, 12 Jun 2010 08:41:06 -0400
Message-ID: <20100612124106.GA1246@phenom.dumpdata.com>
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To: Masroor Vettuparambil <Masroor.Vettuparambil@exar.com>
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On Sat, Jun 12, 2010 at 04:33:15AM -0400, Masroor Vettuparambil wrote:
> Hi,
> 
> I am trying pci pass-through on PV DomU with xen4.0+Dom0 2.6.31.13.
> While loading the driver on DomU with MSIX, I am getting the below oops
> message. I have passed "iommu=soft" and "swiotlb=force" to DomU kernel.
> 
> I can see many related patches applied to 2.6.32.x, but not to 2.6.31.x.

Ugh, I actually didn't backport those patches to 2.6.31.x. I can take a
swing at it next week.

> On my setup I can run the driver with MSIX/INTA on Dom0 and with INTA on
> DomU. Is MSIX support broken in 2.6.31.x?

Yes it is broken. Interestingly you are also using the 32-bit version of kernel which
had light testing when it comes to PCI front.