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Re: [Xen-users] VT-d passthrough strangeness



> On 05/01/2013 11:34 AM, Gordan Bobic wrote:
On Wed, 01 May 2013 10:32:55 -0400, Tony Lill
<ajlill@xxxxxxxxxxxxxxxxxxx> wrote:
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In order to successfully pass through a USB controller to a linux
PVM, I also had to add 'xen-pciback.permissive
pci=resource_alignment=00:13.2' to the dom0 linux command line,
though you can do this through /sys as well.

Any particular reason why specifically 00:13.2 in
pci=resource_alignment=00:13.2? And what exactly does it do?

Sorry, replace 00:13.2 with  the pci id of your usb controller

But why is pci=resource_alignment important specifically for the host USB controller passthrough?

Gordan

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