Xen devel - Feb 2005 - RE: Building domains as a lesser user (was Re: boot loaders for domain != 0)

> Yeah, I think kexec would work but unfortunately it''s not part of
the
> kernel yet.  It could be folded into Xen but I agree with 
> Jeremy that it 
> seems like overkill.  Boot through Linux just to get to a grub screen 
> seems a little strange too.
The ''action'' part of kexec is very arch specific, and the Xen
environment make it easily to implement. We don''t have to wory about
shutting down virtual devices or such like as they will recover
automatically.

Knocking up an arch xen kexec should be easy.

We could implement the system call in arch Xen even though it isn''t in
the mainstream kernel yet.

Ian


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On Fri, 2005-02-04 at 06:33, Ian Pratt wrote:
> We could implement the system call in arch Xen even though it
isn''t in
> the mainstream kernel yet.
Attached is a newer version of the grub menu.  Also contains a /linuxrc
that will kexec.  Turns out that the menu code stays the same for doing
it via kexec or in dom0.

So all that''s left is for someone to port kexec to Xen.  I
won''t get to
it for a while so hopefully someone else can jump in..

I looked at the kexec code and it looks like it will map to Xen fairly
painlessly.

Regards,

-- 
Anthony Liguori
Linux Technology Center (LTC) - IBM Austin
E-mail: aliguori@us.ibm.com
Phone: (512) 838-1208

Signed-off-by: Anthony Liguori