Re: [Xen-users] Xen on quad socket AMD Barcelona

[Riccardo Veraldi <Riccardo.Veraldi@xxxxxxxxxxxx>]

Did you built the Xen kernel with VSMP option enabled instead of default 
PC86 ?
I think 2.6.18 does not support this option.
Sure this option is avaliable on 2.6.26 kernel config.


Rick



Yinghai Lu wrote:
> On 9/26/07, Dean Huffman <dean.huffman@xxxxxxxxxxxxxxxxxxx> wrote:
>   
> > I've been trying to get Xen working on a quad socket Barcelona system but I
> > it hangs just after the Xen hypervisor prints "Brought up 16 CPUs"
> >
> > -          The system will run standard Redhat Linux
> >
> > -          Xen will run if I only power up 2 of the 4 sockets (8 of the 16
> > cores.)
> >
> >
> >
> > I'm still using Xen 3.0.4 but did try Xen 3.1.0 with out any luck.
> >
> >
> >
> > If anyone can answer the following I'd be greatfull.
> >
> >
> >
> > Has anyone been able to successfully bring up Xen on a quad socket AMD
> > Barcelona system?
> >
> >     
> it could be BIOS problem
>
> but xen could workaround it.
>
> before bother your BIOS guys
> at this time, you could try:
> 1. build latest linux kernel with kexec support.
> 2. use kexec to load xen etc.
>
> #!/bin/bash
> P_XKI=
> KERNEL_VER=2.6.18-49.el5
> XEN="$P_XKI"xen.gz-"$KERNEL_VER"
> VMLINUZ="$P_XKI"vmlinuz-"$KERNEL_VER"xen
> INITRD="$P_XKI"initrd-"$KERNEL_VER"xen.img
> ./kexec -l "$XEN" --command-line="com1=9600,8n1 cdb=com1"
> --module=""$VMLINUZ" ro root=LABEL=/ console=ttyS0,9600,8n1"
> --module=""$INITRD""
>
> if it works, you need one BIOS update.
>
> it could be the problem like
> http://lkml.org/lkml/2007/9/21/382
>
> YH
>
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>   

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