linux-kernel - Re: [PATCH] x86: Revert commit 8be8f54bae3453588011cad06363813a5293af53

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Message-ID: <20080303075027.GA11526@elte.hu>
Date:	Mon, 3 Mar 2008 08:50:27 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86: Revert commit
	8be8f54bae3453588011cad06363813a5293af53


* Rafael J. Wysocki <rjw@...k.pl> wrote:

> From: Rafael J. Wysocki <rjw@...k.pl>
> 
> Revert
> 
> commit 8be8f54bae3453588011cad06363813a5293af53
> Author: Thomas Gleixner <tglx@...utronix.de>
> Date:   Sat Feb 23 20:43:21 2008 +0100
> 
>     x86: CPA: avoid split of alias mappings
> 
> because it clearly mishandles the case when __change_page_attr(), called
> from __change_page_attr_set_clr(), changes cpa->processed to 1 and
> cpa_process_alias(cpa) is executed right after that.
> 
> This crashes my x86-64 test box early in the boot process
> (ref. http://bugzilla.kernel.org/show_bug.cgi?id=10140#c4).

thanks Rafael - i've queued up this revert.

	Ingo
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