linux-kernel - Re: [PATCH 2/5] x86: c_p_a clflush_cache

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Date:	Thu, 31 Jan 2008 08:40:25 +0100
From:	Andi Kleen <ak@...e.de>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] x86: c_p_a clflush_cache_range fix

On Thursday 31 January 2008 08:36:02 Huang, Ying wrote:
> Because in i386 early boot stage, boot_cpu_data may be not available,
> which makes clflush_cach_range() into infinite loop, which is called
> by change_page_attr(). This patch fixes this by providing a default
> clflush_size of 64. But the better method may be providing a
> early_identify_cpu() for i386.

There already is one. arch/x86/kernel/cpu/common.c:early_cpu_detect 
Just set it to 64 there.

-Andi

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