linux-kernel - Re: [PATCH] sgi-xp: only build for ia64-sn2 when CONFIG_IA64

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Message-ID: <20081028111727.GA32073@sgi.com>
Date:	Tue, 28 Oct 2008 06:17:27 -0500
From:	Dean Nelson <dcn@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sgi-xp: only build for ia64-sn2 when CONFIG_IA64_GENERIC specified v.2

On Mon, Oct 27, 2008 at 03:02:56PM -0700, Andrew Morton wrote:
> On Thu, 23 Oct 2008 13:33:35 -0500
> Dean Nelson <dcn@....com> wrote:
> 
> > For the time being build for ia64-sn2 alone when CONFIG_IA64_GENERIC is
> > specified.
> > 
> 
> It is 100% unclear (to me) why this change is being made.

It eliminates a dependency of the XP/XPC drivers on having the GRU driver
insmod'd in order to insmod them, when running on an ia64-sn2 system.

On such a system the GRU driver serves no useful purpose.

> 
> Apparently this is considered a needed-in-2.6.28 change.  But I don't
> know why.
> 
> If I knew that then I'd be in a better position to work out whether it
> is also needed in 2.6.27.x, to which it also applies cleanly.

Having it applied to 2.6.27.x would be a good thing.

> IOW: better changelogs, please.

Sorry.

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