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[Xen-users] Fwd: Xen 4.2 Windows 8 Issues

On Tue, Oct 22, 2013 at 8:37 PM, Shane Johnson <sdj@xxxxxxxxxxxxxxxxxxxxxx> wrote:
On Tue, Oct 22, 2013 at 4:30 PM, John Wargo <wargo.john25@xxxxxxxxx> wrote:
> On 10/22/2013 02:51 PM, Shane Johnson wrote:
> <snip>
>      (XEN) AMD-Vi: IO_PAGE_FAULT: domain = 0, device id = 0x0090, fault
> address = 0xffffffc0
> [truncated output, only first 10 iterations are shown...]
> What is the best way to go about solving this problem?
> As always just ask for more info,
> -John
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users
> It seemed to fix the irq error, however I'm still getting the IO_PAGE_FAULT
> errors.
> I'll go through the debugging page on the wiki, and see what I can't dig
> up..
> -John
> John,
> I know when I have need help before, I was asked to include the
> verbose output of the create command and the log files mentioned in
> the submitting a bug section. From looking at those logs,  those on
> here who know a heck of a lot more that I do where able to spot what
> my problem was.  If you can't find it with the steps on the debugging
> wiki that may be the next best step.  Also some details on your
> hardware and a file or screen print of your xl list command would also
> probably be beneficial.
> Good luck
> Shane
> After some debugging, here is what I've been able to come up with, if
> there's an issue with attachments, just let me know how to properly post the
> logs.
> Included in the zip :
> create.xen     - The result of "xl create -d ./win8.cfg"
> dmesg-boot.xen - The result of "xl dmesg" immediately after boot
> dmesg-win8.xen - The result of "xl dmesg" after failing to install windows 8
> grub           - My grub configuration file (/etc/default/grub)
> info.xen       - The result of "xl info"
> win8.cfg       - The configuration file I'm using for windows 8
> -John

Sorry John,
Memory isn't as good as it used to be.  I went back and read the
entire conversation again and I think something clicked.  (Or maybe
just broke).  Try disabling viridian.  I just remembered when I loaded
Win8.1 just to test it out to see if it was bad as everyone said, I
ran into something similar.  If I remember correctly I completely
disabled viridian or at least until I had 8.1 up and running.
Like I said I'm not an expert on this.
Looking over your logs I don't see anything that stands out.
Hopefully something here helps.  If not hopefully one of the guru's
will step in.
Just out of curiosity, Is there is reason for disabling the IOMMU
remapping in your grub file?

Shane D. Johnson
IT Administrator
Rasmussen Equipment

Xen-users mailing list


When I disable viridian, I can complete the "getting devices ready" phase, however after that the vnc window goes black.
When I look at the VCPUs though they are definitively processing something, so I think that it may be a graphics issue caused by one of my other attempts at fixing it, but I'll have to look into it tomorrow.

Unfortunately I am still getting the IO page fault from AMD Vi, when I look at 'xl dmesg'.

To answer your question, I set iommu=no-intremap (I assume that this is what you're talking about), because every other option I've tried will result in an error disabling IOMMU on startup.
(I have one of those FX processors with the buggy tables..)

Thanks for your help,
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