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[Xen-devel] Re: [patch] [ppc] use xen_ulong_t in start_info

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: [Xen-devel] Re: [patch] [ppc] use xen_ulong_t in start_info
From: Hollis Blanchard <hollisb@xxxxxxxxxx>
Date: Fri, 28 Jul 2006 17:34:49 -0500
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, xen-ppc-devel <xen-ppc-devel@xxxxxxxxxxxxxxxxxxx>
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On Fri, 2006-07-28 at 10:57 +0100, Keir Fraser wrote:
> On 27 Jul 2006, at 21:40, Hollis Blanchard wrote:
> > Keir, you mentioned that start_info probably doesn't make much sense 
> > for
> > PowerPC. However, if for no other reason than linux/drivers/xen has 
> > many
> > references to it, we'd like to fix it for now and figure out how to
> > replace it later.
> I think that structure is quite x86-specific. I'd be happy to see 
> direct references to start_info replaced in drivers/xen. Obvious (and 
> ugly) low-hanging fruit is test for SIF_INITDOMAIN. Replacing with 
> arch-specific is_initial_domain() or similar would be a great patch to 
> receive.


> A couple of the others (e.g., console_mfn, store_mfn) are a 
> bit harder -- how do you communicate those on ppc?

We intend to communicate those via the Open Firmware device tree.
(There's a brief overview at
http://wiki.xensource.com/xenwiki/XenPPC/OpenFirmware .)

Hollis Blanchard
IBM Linux Technology Center

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