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Re: [Xen-devel] Re: [pvops xen/next ][iommu] attenpt to passthrough PCI-e usb controllor to PV domU SUCCESS :-)
On Tue, Mar 23, 2010 at 11:23:36AM +0000, Jan Beulich wrote:
> >>> Sander Eikelenboom <linux@xxxxxxxxxxxxxx> 23.03.10 11:23 >>>
> >How do these handle DMA related to the passthrough device in a PV-guest then
> >?
> >From what i remember from previous (debian) xen kernels was that at least
> >swiotlb=force was needed as kernel options to the domU kernel to passthrough
> >usb-controllers.
>
> Yes, exactly. But not "iommu=soft".
>
Ok, I'll update the wiki.
-- Pasi
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