Re: [Xen-users] PCI passthrough to PV guest - domU kernel panic when using iommu=soft

[Christian <mythtv@xxxxxxxxxx>]

It's working now! However, the command line params to set the maximum dom0 memory do not work for me. Instead I had to execute

xm mem-set Domain-0 512M

right after startup. After that I could go on and start the domU.

One more note on Ubuntu 12.04: In order to access the passed PCI device,  I had to compile the XEN PCI frontend driver into the kernel. The PCI backend driver is compiled into the kernel as well. I didn't make any efforts to checker whether the system runs with the PCI backend loaded as module.

best regards and thanks for your support,

Christian

2012/8/6 Святослав Щербина <sch.svyatoslav@xxxxxxxxx>

I use 768M.
The total amount of physical memory is 2G.

2012/8/6 Christian <mythtv@xxxxxxxxxx>

I am currently not at home and therefore can not try it but I think I limited dom0 memory via GRUB_CMDLINE_XEN="dom0_mem=2048M" in the Grub2 config. How much memory do you use in your dom0?

2012/8/4 Svyatoslav Scherbina <sch.svyatoslav@xxxxxxxxx>

Christian <mythtv <at> hocken.net> writes:

>
> Did no one of you encounter this problem before? I cannot imagine that my
setup is that special.
>
>
>
>

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Hi. Do you have your dom0 memory limited?
I had the same errors, and the problem was solved by limiting dom0 memory.




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