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Re: [Xen-devel] dom0 kernel crashes with kernel panic during boot

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] dom0 kernel crashes with kernel panic during boot
From: "Mark A. Williamson" <mark.williamson@xxxxxxxxxxxx>
Date: Mon, 15 Nov 2004 20:03:31 +0000
Cc: Jan Kundrat <jan.kundrat@xxxxxx>
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Have you compiled serial port support into the dom0 kernel - you shouldn't 
build this driver in or it will conflict with Xen's use of the port.

If you just build in the standard Xen console driver, it will register as 
ttyS0 and will play nicely with Xen.


On Monday 15 Nov 2004 19:52, Jan Kundrat wrote:
> > Are you building with CONFIG_4KSTACKS? Can you please try without?
> > I suspect that the config option is broken... :-(
> ok, building without CONFIG_4KSTACKS fixed that panic, but I have other
> problem - is it possible to share one serial port between grub, xen itself
> and dom0?
> It panics also if I use
> kernel (hd0,0)/xen.gz dom0_mem=32768
> module (hd0,0)/vmlinuz-2.6.9-xen0 root=/dev/hda3 ro console=ttyS0,115200
> my grub.conf contains
> serial --unit=0 --speed=115200
> terminal serial console
> the (stripped) message is:
> devfs: 2004-01-31 Richard Gooch (rgooch@xxxxxxxxxxxxx)
> devfs: boot_options: 0x1
> Limiting direct PCI/PCI transfers.
> serio: i8042 AUX port at 0x60,0x64 irq 12
> serio: i8042 KBD port at 0x60,0x64 irq 1
> Serial: 8250/16550 driver $Revision: 1.90 $ 6 ports, IRQ sharing disabled
> ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> HP CISS Driver (v 2.6.2)
> pcnet32.c:v1.30i 06.28.2004 tsbogend@xxxxxxxxxxxxxxxx
> Kernel panic - not syncing: Couldn't register Xen virtual console driver
> as ttyS

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