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Re: [Xen-users] Problems converting FC8 HVM guest to PV

To: Evan Lavelle <sa212+xen@xxxxxxxxxxx>
Subject: Re: [Xen-users] Problems converting FC8 HVM guest to PV
From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
Date: Fri, 28 Dec 2007 14:34:23 +0000
Cc: Xen <xen-users@xxxxxxxxxxxxxxxxxxx>
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Evan Lavelle wrote:
Thanks guys - the good news is that I can boot the PV DomU with your fixes:

title Fedora (PV boot, Xen kernel, 2952)
    root (hd0,0)
    kernel /vmlinuz-2.6.21-2952.fc8xen ro root=LABEL=/ rhgb quiet
    initrd /initrd-2.6.21-2952.fc8xen.pv.img

name   = "fc8-32-001"
memory = 1024
vcpus  = 1
vif  = [ 'mac=00:0f:b5:ae:4f:2a, bridge=xenbr0' ]
disk = [ 'phy:/dev/VG_Guests/FC8-32-001,hda,w'  ];
bootloader="/usr/bin/pygrub"
boot = "cd"
sdl  = 1
vnc  = 0

I got rid of the root line with no problems. I couldn't boot at all with the original ramdisk (I got a "mount: could not find filesystem 'dev/root'" error), but had no problem with the xenblk and xenblock/xennet ramdisks.

The *bad* news is, well, bad. The DomU appears to be Ok at first sight, but crashes when I run a specific program (wine, which is a Windows-on-Unix emulator [yes, I know that's crazy, but I need it for testing]). I get a kernel bug:

kernel BUG at include/linux/tracehook.h:369!
invalid opcode: 0000 [#1]

Should I bother reporting this? The Dom0 appears flakey after this so I need to restart the entire machine.
Can you do a fast, clean FC8 PV install and test Wine on it?

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