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

["Yang, Fred" <fred.yang@xxxxxxxxx>]

Brett,

Anthony's patch is base on the patch that Stanley originally done.
Anthony should have done the test for Linux2.6.12 on Xen.  Attatched is
the original proposal from Stanley.

-Fred
===========
On Wed, 2005-02-23 at 14:45 +0800, Wang, Stanley wrote:
>Hi, Bret
>
>I'm now working on XEN/IA64 project and need new features from ELILO. 
>
>While booting IA64 machine with XEN, we need to load three images: Xen,
>domain0 and initrd for domain0.  Xen is the hypervisitor of the virtual
>machine. Domain0 is the Linux kernel run on guest virtual machine, it
>also works as management interface between user and virtual machine.
>    
>The idea loading steps are 
>1. Elilo loads Xen and Domain0 Linux images into memory, initrd for the
>Domain0 Linux will also got passed through Elilo
>2. Elilo gives control to Xen
>3. Xen do the basic system init and then gives control to Domain Linux
>4. Domain0 Linux can then boot and gets initrd data
>
>But current ELILO can only load two images (kernel and initrd) for us,
>do you aware any such kind of enhancing work in progress? If no, I
>wonder if it is possible to merge such kind of work into your official
>ELILO tree? (EX: "-m" option to specify the additional boot-time module
>when using command line tool; "module" option to specify additional
>boot-time module when using config file.)
=================================

. Magenheimer, Dan (HP Labs Fort Collins) wrote:
> 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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