From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan C. Bernauer" <jan.bernauer@t-online.de>
Subject: Re: Problem with PCI device assignment (KVM-79, 2.6.28)
Date: Sun, 07 Dec 2008 23:42:32 +0100
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Jakob Sandgren wrote:
> > Hi,
> >
> > I get the following (fatal) error when trying to assign a pci device
> > (USB 2.0 controller) to a guest:
> > create_userspace_phys_mem: Invalid argument
> > assigned_dev_iomem_map: Error: create new mapping failed
> >
> > Assigning another (USB 1.1) device works.
> >
> >

Can you check what lspci -v says?
I suspect the size of a memory region is not a multiple of 4096.
Same thing happens for me for a network and a dvb card.

As far as I know, the mapping code can only map whole pages. So the code
has to expand the size to the nearest multiple.


Best regards,
Jan C. Bernauer