linux-kernel - Re: [PATCH] x86: clean up setup_clear/force_cpu

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Date:	Sat, 27 Dec 2008 11:22:34 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yinghai@...nel.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: clean up setup_clear/force_cpu_cap handling


* Yinghai Lu <yinghai@...nel.org> wrote:

> Impact: fix and cleanup
> 
> setup_force_cpu_cap() only have one user xen
> but it should not reuse cleared_cpu_cpus. it will have problem
> for smp.
> 
> need to have cpu_cpus_set array too.
> also need to setup handling before all cpus cap AND
> 
> Signed-off-by: Yinghai Lu <yinghai.lu@...nel.org>
> 
> ---
>  arch/x86/include/asm/cpufeature.h |    4 ++--
>  arch/x86/include/asm/processor.h  |    3 ++-
>  arch/x86/kernel/cpu/common.c      |   17 ++++++++++++-----
>  3 files changed, 16 insertions(+), 8 deletions(-)

Rusty, you'll carry this patch in your linux-2.6-boot-params.git tree, 
right? Merging this in the x86 tree would just needlessly complicate your 
logistics, right?

	Ingo
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