linux-kernel - Re: [patch] x86: make UV support optional

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Message-ID: <20090106123106.GB10319@elte.hu>
Date:	Tue, 6 Jan 2009 13:31:06 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Nick Piggin <nickpiggin@...oo.com.au>
Cc:	Nick Piggin <npiggin@...e.de>, Yinghai Lu <yinghai@...nel.org>,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	linux-kernel@...r.kernel.org, Cliff Wickman <cpw@....com>,
	Jack Steiner <steiner@....com>, Russ Anderson <rja@....com>
Subject: Re: [patch] x86: make UV support optional


* Nick Piggin <nickpiggin@...oo.com.au> wrote:

> On Tuesday 06 January 2009 20:01:38 Ingo Molnar wrote:
> 
> > > > > ---
> > > > >  arch/x86/Kconfig                  |    7 +++++++
> > > > >  arch/x86/include/asm/genapic.h    |   24 ++++++++++++++++++++++++
> > > > >  arch/x86/include/asm/genapic_32.h |    7 -------
> > > > >  arch/x86/include/asm/genapic_64.h |    9 ---------
> > > > >  arch/x86/kernel/Makefile          |    5 +++--
> > > > >  arch/x86/kernel/entry_64.S        |    2 ++
> > > > >  arch/x86/kernel/genapic_64.c      |    3 ++-
> > > > >  arch/x86/kernel/io_apic.c         |    2 +-
> > > > >  8 files changed, 39 insertions(+), 20 deletions(-)
> > > >
> > > > how about
> > > > kernel/efi.c:                   efi.uv_systab = config_tables[i].table;
> > > > ?
> > >
> > > Good point, I missed that. Will resend a patch with that ifdef'ed
> > > tomorrow unless any serious objections are raised.
> >
> > Looks good to me, but please also extend the Makefile changes to
> > kernel/tlb_uv.c, ./kernel/uv_sysfs.c, kernel/uv_irq.c, kernel/bios_uv.c -
> > UV not just the genapic bits. Perhaps do it via gradual patches.
> 
> Hmm, I think the Makefile changes should be there... the files you 
> reference AFAIKS are put under conditional compilation with my patch?

ah, indeed - i was looking at the diffstat and went "where's the 
mm/Makefile changes" ;-) So your patch is good as-is, as long as the thing 
Yinghai noticed is fixed.

	Ingo
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