From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Using xen-unstable, dom0 hangs during boot
Date: Thu, 25 Feb 2010 15:11:53 -0800
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To: "Nadolski, Ed" <Ed.Nadolski@lsi.com>
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On 02/25/2010 02:18 PM, Nadolski, Ed wrote:
> I'm running Fedora 12 (kernel 2.6.31.5-127.fc12.x86_64) on a Dell T7500 Xeon with VT-x and VT-d. After building xen-unstable and rebooting, the dom0 Linux hangs a few seconds after it gets control from Xen, and I have to power-cycle to recover.   Here are the last messages before it hangs:
>
> [    2.766882] loop: module loaded
> [    2.767736] input: Macintosh mouse button emulation as /devices/virtual/input/input2
> [    2.769396] xen_set_ioapic_routing: irq 20 gsi 20 vector 20 ioapic 0 pin 20 triggering 1 polarity 1
> [    2.770342] achi 0000:00:1f.2: PCI INT C ->  GSI 20 (level, low) ->  IRQ 20
> [    2.771158] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 6 ports 3 Gbps 0x27 impl SATA mode
> [    2.772078] ahci 0000:00:1f.2: flags: 64bit ncq sntf led clo pio ems
> <<hangs at this point>>
>
> Thoughts?  Any grub parameters I should try for Linux and/or Xen?  Any further info I can provide?
>    

What kernel is this?  What's the boot command line?

     J