Comment 21 for bug 818673

On Wednesday 14 September 2011 14:42:09 vrozenfe wrote:
> Thank you, Rick.
>
> Could you help me to narrow this problem down?
Absolutely.

>
> As I see, you have three virtio drivers installed on your system - block,
> net, and virtio serial. Technically, anyone of them can create "trying to
> map MMIO memory" problem. The best way to find a buggy driver ( or
> drivers) will be to isolate one from the other. If you can, please try
> running only one virtio device every time to see which driver sends
> incorrect scatter/gather list element to QEMU.
Sure, no problem. I'll have that in the next few days.

>
> Another question. You said, the problem happens after every second or third
> restart. Do you shutdown your VM, or just restart it?
Have to shut down the VM guest so that the qemu process exits.

> How does it work
> after going through several hibernate/resume, and/or suspend/resume
> cycles.
I often will suspend with or without pausing qemu (via monitor commands 'stop'
and 'cont'). I have never experienced any problem with the qemu process that
was running prior to the suspend.

>
> Best regards,
> Vadim.

Thanks,
-Rik