[mythtv-users] DVB tuner not working in Xen PV guest

[Christian]

2011/7/29 Simon Hobson <linux at thehobsons.co.uk>

> Christian wrote:
>
> >The PCI Passthrough guide
> >at <http://wiki.xensource.com/xenwiki/XenPCIpassthrough>
> http://wiki.xensource.com/xenwiki/XenPCIpassthrough states
> >that swiotlb=force and iommu=soft must be set as kernel boot options
> >in the domU.  Have you already tried hat?
>
> Success, yay !
>
> I find that page a tad less clear than it could be - at least for
> someone who hasn't been following the ins and outs of xen patches vs
> pvops kernels and so on. It's all the "you need this ...", "but if
> you have <something> then you need this other thing" stuff that had
> me caught up.
>
> I think I had two things wrong.
>
> Firstly, I had pciback.hide... in my Dom0 boot config, but it's now
> xen-pciback.hide ...
>
> In my DomU I needed iommu=soft but not swiotlb=force - in fact it
> didn't work with swiotlb=force and iommu=soft both present. Get those
> right and suddenly dvbtune gets results, and now MythTV setup has
> found channels :)
>
> Congratulations! Nice to hear that you finally got it up and running.
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