linux-kernel - Re: [PATCH 2/3] x86: Use linker to offset symbols by __per_cpu

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Message-ID: <20090209092951.GB7930@elte.hu>
Date:	Mon, 9 Feb 2009 10:29:51 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Brian Gerst <brgerst@...il.com>
Cc:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>
Subject: Re: [PATCH 2/3] x86: Use linker to offset symbols by __per_cpu_load


* Brian Gerst <brgerst@...il.com> wrote:

> Impact: cleanup and bug fix
> 
> Use the linker to create symbols for certain per-cpu variables
> that are offset by __per_cpu_load.  This allows the removal of
> the runtime fixup of the GDT pointer, which fixes a bug with
> resume reported by Jiri Slaby.
> 
> Signed-off-by: Brian Gerst <brgerst@...il.com>
> Cc: Jiri Slaby <jirislaby@...il.com>
> ---
>  arch/x86/include/asm/percpu.h    |   22 ++++++++++++++++++++++
>  arch/x86/include/asm/processor.h |    2 ++
>  arch/x86/kernel/cpu/common.c     |    6 +-----
>  arch/x86/kernel/head_64.S        |   21 ++-------------------
>  arch/x86/kernel/vmlinux_64.lds.S |    8 ++++++++
>  5 files changed, 35 insertions(+), 24 deletions(-)

applied to tip/core/percpu, thanks!

Also added these tags:

Reported-by: Jiri Slaby <jirislaby@...il.com>
Acked-by: Jiri Slaby <jirislaby@...il.com>

	Ingo
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