From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ewan Mellor <ewan@xensource.com>
Subject: Re: architecture-specific stuff in xend
Date: Wed, 9 Aug 2006 17:18:11 +0100
Message-ID: <20060809161811.GD26245@leeni.uk.xensource.com>
References: <1155051266.30116.152.camel@basalt.austin.ibm.com>
	<20060808155953.GA20410@totally.trollied.org>
	<20060809092810.GC19705@leeni.uk.xensource.com>
	<1155136032.2821.6.camel@diesel>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Return-path: <xen-devel-bounces@lists.xensource.com>
Content-Disposition: inline
In-Reply-To: <1155136032.2821.6.camel@diesel>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Hollis Blanchard <hollisb@us.ibm.com>
Cc: xen-ppc-devel <xen-ppc-devel@lists.xensource.com>, xen-ia64-devel <xen-ia64-devel@lists.xensource.com>, xen-devel <xen-devel@lists.xensource.com>, John Levon <levon@movementarian.org>
List-Id: xen-devel@lists.xenproject.org

On Wed, Aug 09, 2006 at 10:07:12AM -0500, Hollis Blanchard wrote:

> On Wed, 2006-08-09 at 10:28 +0100, Ewan Mellor wrote:
> > On Tue, Aug 08, 2006 at 04:59:53PM +0100, John Levon wrote:
> > 
> > > On Tue, Aug 08, 2006 at 10:34:25AM -0500, Hollis Blanchard wrote:
> > > 
> > > > I'm not sure how/where to instantiate the arch object though.
> > > 
> > > Presumably you could do the instance() singleton trick?
> > 
> > This being Python, you don't actually need singletons -- the containing module
> > is a singleton in its own right.  You can just write
> > 
> > Platform.py:
> > 
> > import os
> > 
> > if os.uname()[4] in ('ia64', 'ppc64'):
> >     def init_reservation(mem_kb):
> >         return something_else(mem_kb)
> > 
> > else:
> >     def init_reservation(mem_kb):
> >         return mem_kb
> > 
> > and then
> > 
> > import Platform
> > Platform.init_reservation(100)
> > 
> > will do the right thing.
> 
> Ewan, does this mean you think the proposal is going in the right
> direction and you're waiting for a patch?

Yes, your proposal sounds fine to me.

Ewan.