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

[Steve Allison <xen-users@xxxxxxxxxxxxxxxxxx>]

On 04/08/2011 13:27, Simon Hobson wrote:
> Simon Hobson wrote:
>
> > I found the card worked in Dom0 with Xen loaded. After some trial and 
> > error I realised I'd made two mistakes in my config.
> > 1) I'd used "pciback.hide ..." instead of the newer "xen-pciback.hide 
> > ..." loading Dom0 kernel.
> > 2) Then in DomU I needed to use "iommu=soft" and not "swiotlb=force"
> Spoke too soon :(
>
> It *was* working, then I upgraded the memory in the server. After a 
> morning spent trying various permutations*, I've determined that my 
> setup works with 1G or 4G RAM, but not with 5G or 8G.
> Any suggestions what I'm missing ? IS there something I need to change 
> with >4G RAM ?
> To recap, I'm trying to run MythTV in a PV guest with one HVR-1200 DVB 
> Tuner made available via pciback.hide.
> Xen, Dom0, DomU all from Debian stable (Squeeze) - Xen 4.0.1, kernel 
> 2.6.32-xen.
> AND64 - HP Proliant Microserver
I no longer have the setup available to test as I moved MythTV to a 
seperate server. I can confirm however that the server I was trying to 
setup did in fact have 8GB of RAM. I never thought to reduce this to test.
If you add the following line to /etc/default/grub

GRUB_CMDLINE_XEN="dom0_mem=512M"

You could restrict the amount of RAM available to the dom0, would that 
make it work in dom0? A stab in the dark, I know.
--
May the ping be with you ..


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