linux-kernel - Re: [PATCH 3/3] x86: Fix abuse of per_cpu

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Message-ID: <20090209093100.GC7930@elte.hu>
Date:	Mon, 9 Feb 2009 10:31:00 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Brian Gerst <brgerst@...il.com>
Cc:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 3/3] x86: Fix abuse of per_cpu_offset


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

> Impact: bug fix
> 
> Don't use per_cpu_offset() to determine if it valid to access a
> per-cpu variable for a given cpu number.  It is not a valid assumption
> on x86-64 anymore.  Use cpu_possible() instead.
> 
> Signed-off-by: Brian Gerst <brgerst@...il.com>
> ---
>  arch/x86/mm/numa_64.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)

Applied to tip/core/perpcu, thanks Brian!

	Ingo
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