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

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Message-ID: <20090106064433.GB16738@wotan.suse.de>
Date:	Tue, 6 Jan 2009 07:44:33 +0100
From:	Nick Piggin <npiggin@...e.de>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	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

On Mon, Jan 05, 2009 at 10:38:17PM -0800, Yinghai Lu wrote:
> On Mon, Jan 5, 2009 at 10:03 PM, Nick Piggin <npiggin@...e.de> wrote:
> > UV is fairly rare.... and much of the support is already there to cope with
> > 32-bit builds. So this makes sense I think.
> >
> > --
> > Make X86 SGI Ultraviolet support configurable. Saves about 13K of text size
> > on my modest config.
> >
> >   text    data     bss     dec     hex filename
> > 6770537 1158680  694356 8623573  8395d5 vmlinux
> > 6757492 1157664  694228 8609384  835e68 vmlinux.nouv
> >
> > Signed-off-by: Nick Piggin <npiggin@...e.de>
> > ---
> >  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.

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