[mythtv-users] DVB tuner not working in Xen PV guest
linux at thehobsons.co.uk
Mon Jul 25 19:06:18 UTC 2011
>The PCI Passthrough guide at
>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?
>Let me know if it works, I'm also interested in virtualizing my backend.
No it didn't - and I'm a bit embarrassed that I missed that setting.
As I mentioned, I have Myth 0.21 running under Xen - that's with a
2.6.18-xen-686 kernel on Xen 3.2.1 IIRC. It can cope with 3
recordings off one tuner (DVB Multirec), but I think it's struggling
to get recordings onto disk while there's a commflag job running (so
I've mostly disabled comm flagging).
An obvious answer is to abandon trying to run Myth under Xen and just
use my old box as a dedicated backend - but that means having two
boxes on all the time and I get enough hassle over the "roomful of
blinking lights" as it is !
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