[Pkg-xen-devel] Problems with amd64 hypervisor and i386 dom0 (Was: Re: i386 hypervisor seeing only ~16G RAM, amd64 required?)

[Andy Smith]

Hi,

On Wed, Jan 21, 2009 at 01:16:25AM +0000, Andy Smith wrote:
> When I boot the amd64 hypervisor with the Lenny kernel, the dom0 boots
> as far as mounting the root filesystem, but then no further output
> is displayed on console:

[...]

> Here's what my grub entry looks like for the amd64 hypervisor /
> Lenny kernel combo:
> 
> title           Xen 3.2-1-amd64 / Debian GNU/Linux, kernel 2.6.26-1-xen-686
> root            (hd0,1)
> kernel          /xen-3.2-1-amd64.gz com1=9600,8n1 console=com1,vga dom0_mem=1024M
> module          /vmlinuz-2.6.26-1-xen-686 root=UUID=1f838bea-0d4a-45d4-a4b9-af79f865faeb ro console=ttyS0,9600n8 console=tty0
> module          /initrd.img-2.6.26-1-xen-686
> 
> Maybe it's just something simple I am missing.

After changing to:

title           Xen 3.2-1-amd64 / Debian GNU/Linux, kernel 2.6.26-1-xen-686
root            (hd0,1)
kernel          /xen-3.2-1-amd64.gz com1=9600,8n1 console=com1,vga dom0_mem=1024M
module          /vmlinuz-2.6.26-1-xen-686 root=UUID=1f838bea-0d4a-45d4-a4b9-af79f865faeb ro console=ttyS0,9600 console=hvc0
module          /initrd.img-2.6.26-1-xen-686

and putting hvc0 in /etc/securetty and /etc/inittab as "co:", I do
get what looks like a normal boot on the serial console.

I do see this though:

Id "T0" respawning too fast: disabled for 5 minutes

(that normally being my dom0 serial console, which does work with
the Etch kernel)

Relevant parts of /etc/inittab:

1:2345:respawn:/sbin/getty 38400 tty1
T0:23:respawn:/sbin/getty -L ttyS0 9600 vt102
co:2345:respawn:/sbin/getty 38400 hvc0


Does anyone know the correct grub settings for displaying to both serial
console and VGA with this Lenny kernel?

I've Googled on this subject quite a lot, but I am not sure if I
should be looking at upstream (kernel.org) docs or Xensource ones or
what.

Cheers,
Andy
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