Hi guys,

I don't know really when the bug was introduced, but maybe I can help narrowing it down.

I have similar problems as others reported: Running FreeBSD 8.0-RC1 as a guest in a Xen 3.3.1 environment fails with either "kernel trap 12" in an endless loop (using amd64) or "kernel trap 9" (using i386).

For 8.0-RC1 it doesn't make a difference if it's a clean install, in which case I wouldn't even be able to start the installer, or a "freebsd-update upgrade -r 8.0-RC1" from 7.2-RELEASE, in which case it wouldn't reboot with the newly compiled kernel.

Funnily one of the earlier betas (not sure which one it exactly was, and can't reproduce any more, as they are not available on any mirrors), and 8.0-SNAPSHOT-200906 (tested today) both work without any problems.

With the snapshot, I was also able to build a XENHVM kernel, which boots fine, and offers the XENHVM network and block devices.

The environment I'm testing on is:
- Intel i7 920, 12 GB RAM
- Dom0 is running on CentOS 5.2 and Xen 3.3.1 (Citrix XenServer 5.5)

Is there any way to extract relevant information, which would help you to fix it? I'd really like to see FreeBSD 8.0-RELEASE working on Xen! So if there is anything you need to know, please tell me what it is, and how I can gather it.


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