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

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Message-ID: <86802c440901052238x5ff919f1u31360163e547b306@mail.gmail.com>
Date:	Mon, 5 Jan 2009 22:38:17 -0800
From:	"Yinghai Lu" <yinghai@...nel.org>
To:	"Nick Piggin" <npiggin@...e.de>
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 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;
?

YH
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