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Re[2]: [Xen-devel] [xen 3.5-unstable] passthrough of pci USB card fails

To: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
Subject: Re[2]: [Xen-devel] [xen 3.5-unstable] passthrough of pci USB card fails
From: Sander Eikelenboom <linux@xxxxxxxxxxxxxx>
Date: Wed, 22 Jul 2009 08:56:42 +0200
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Hello Dexuan,

Ah I had seen that reassign_resources was removed, not reassigndev too.
I will try the new guestdev somewhere today, thanks for the pointer !

-- Sander

Wednesday, July 22, 2009, 5:02:13 AM, you wrote:

> The boot parameters changed.

> I think you should have a look at
> http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev=reassign_resources 

> -- Dexuan

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Sander Eikelenboom
> Sent: 2009?7?21? 20:17
> To: xen-devel@
> Subject: [Xen-devel] [xen 3.5-unstable] passthrough of pci USB card fails

> Hi,

> I'm trying to passthrough a pci USB card to a DomU (HVM).
> Although pciback seems to seize the device with all functions as seen in
> the dmesg output, they don't appear using "xm pci-list-assignable-devices".

> When trying to passthrough to a HVM (with VT-D enabled) it stops creating
> the domain and complains about:
> VmError: pci: 0000:01:00.2: non-page-aligned MMIO BAR found.

> From what I read, booting the xen hypervisor with "reassigndev=" should
> solve the non-page-aligned issues, but apparently it doesn't in this case.
> Also added them to xend-pci-persmissive.

> Is there another boot-option/way to reassign the device ?

> Regards,

> Sander

> Attached is the output from:
> xm info
> xm dmesg
> dmesg
> lspci -vvvnnk
> ls /sys/bus/pci/drivers/pciback
> /var/log/xen/xend log with the start of a HVM domain
> winhvm.cfg (config file of the hvm domain)

Best regards,
 Sander                            mailto:linux@xxxxxxxxxxxxxx

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