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RE: [Xen-ia64-devel] RE: [elilo-discuss] a patch to make elilo loadanoth

To: "Magenheimer, Dan \(HP Labs Fort Collins\)" <dan.magenheimer@xxxxxx>, "Brett Johnson" <brettj@xxxxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-ia64-devel] RE: [elilo-discuss] a patch to make elilo loadanother module
From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Date: Thu, 18 Aug 2005 07:42:24 +0800
Cc: elilo-discuss@xxxxxxxxxxxxxxxxxxxxx, "Wang, Stanley" <stanley.wang@xxxxxxxxx>, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
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Thread-topic: [Xen-ia64-devel] RE: [elilo-discuss] a patch to make elilo loadanother module
Brett,

Please pull the attached elilo patch which is to add support for extra
module load for Xen in ia64 environment.
The following elilo.conf entry highlighted the new added support

image=xen.gz          <=== Xen image to be loaded by elilo
        label=xen
        initrd=initrd-2.6.12.EL 
        module=vmlinuz-2.6.12.EL.img   <=== Linux kernel to be run in
Domain0 Linux in Xen
        read-only
        append="console=tty0 root=/dev/sda2"

The attached patch has been validated to work in Linux2.6 environment.

Regards,

Anthony Xu
Intel Corp.



-----Original Message-----
From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
Magenheimer, Dan (HP Labs Fort Collins)
Sent: Wednesday, August 03, 2005 1:31 PM
To: Brett Johnson; Xu, Anthony
Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx; Wang, Stanley;
elilo-discuss@xxxxxxxxxxxxxxxxxxxxx
Subject: [Xen-ia64-devel] RE: [elilo-discuss] a patch to make elilo
loadanother module

Hi Brett --

I haven't studied the details, but implemented a similar
patch on top of elilo for a previous HP research project
a couple years ago...  mine was really a hack though and
I'm sure you want this one to be more generally useful.

If the patch:
1) allows at least one additional "initrd-like" file to be
   specified, and
2) elilo loads the additional file(s) into physical
   memory, and
3) elilo somehow communicates the location of the additional
   file via some kind of backwards-compatible extension to
   ia64_boot_param, and
4) the patch gets into the mainline elilo source asap

then the patch meets my needs (which I believe are the same
as Anthony's).

I've also cc'ed the xen-ia64-devel list so other Xen/ia64
folks can chime in.

Dan

> -----Original Message-----
> From: Brett Johnson [mailto:brettj@xxxxxxxxxxxxxxxxxxxxx] 
> Sent: Wednesday, August 03, 2005 2:24 PM
> To: Xu, Anthony
> Cc: Magenheimer, Dan (HP Labs Fort Collins); Wang, Stanley; 
> elilo-discuss@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [elilo-discuss] a patch to make elilo load another module
> 
> On Wed, 2005-08-03 at 11:57 +0800, Xu, Anthony wrote:
> > Hi Brett,
> > 
> > This patch is used to make elilo can load another module. 
> As we know,
> > grub also can load another module except for initrd. Currently I'm
> > working on Xen project, we need elilo can load another module, thus
> > guest OS can load initrd of himself. Otherwise guest OS can't have
> > initrd.
> 
> Hi Anthony,
> 
> I've also received a very similar patch from Stanley Wang of 
> intel (I've
> CC'd him on this email).  Is yours just a later version of Stanley's?
> ISTR that Stanley thought his patch needed a fair amount of 
> cleaning up,
> and to be honest, I haven't looked very closely at it yet.  Does the
> patch provide what you need for Xen then?  It looks like it 
> simply adds
> a "module" directive to the conf file, and a "-m" command line
> parameter.
> 
> I've also CC'd Dan Magenheimer, as I know he's involved in 
> Xen as well,
> and may have some input on the "is this what you need" front 
> :)  -- oh,
> and I've attached Anthony's patch to this email, so everyone has it.
> 
> -- 
> Brett Johnson <brett@xxxxxx>
> 

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Attachment: elilo-3.4.11.xen.patch
Description: elilo-3.4.11.xen.patch

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