[Pkg-xen-devel] Bug#684661: Bug#684661: Xen panic on boot

[Joe Julian]

On 09/04/2012 01:24 AM, Ian Campbell wrote:
> On Mon, 2012-09-03 at 16:57 -0700, Joe Julian wrote:
>> I'm also getting the same error. I don't have anything with serial
>> ports, but hopefully this will be of some use.
> Thanks.
>
> Wei does this give any hints to this bug? This is the Xen BUG at
> pci_amd_iommu.c:33 one I CCd you on before http://bugs.debian.org/684661
>
> Joe, are you able to press Shift-PgUp to scroll up to the top part of
> the trace? (I must confess I'm not sure that works for Xen, perhaps its
> a Linux-ism).
>
> Looks like you are already using the vga= option to increase the number
> of lines displayed.
>
> Ian.
>
No, once it's hung there it's stuck (doesn't even reboot in 5 seconds 
like it claims).

This was actually the Fedora 17 build, 4.1.3-2 and coincided with me 
having to remove 2 gig (bringing it down to 2 remaining gig) from an 
Asus K8N-DL due to memory failure. I tried rolling back to 4.1.2-15 with 
the same result. I found an old reference to this motherboard suggesting 
that with less than 3 gig, there's an iommu problem: 
http://www.gentoo-wiki.info/Asus_K8N-DL

I'll get this memory replaced and see if that has any effect.