From: Andi Kleen <ak@suse.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH 1/10] Cr4 is valid on some 486s
Date: Sun, 13 Nov 2005 20:00:44 +0100
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Cc: Dave Jones <davej@redhat.com>, Zachary Amsden <zach@vmware.com>,
       Pavel Machek <pavel@ucw.cz>, Andrew Morton <akpm@osdl.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       "H. Peter Anvin" <hpa@zytor.com>,
       Zwane Mwaikambo <zwane@arm.linux.org.uk>,
       Pratap Subrahmanyam <pratap@vmware.com>,
       Christopher Li <chrisl@vmware.com>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       Ingo Molnar <mingo@elte.hu>, torvalds@osdl.org
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On Sunday 13 November 2005 18:26, Alan Cox wrote:

> I'd hope the vendors are not doing that by default because we have
> kernel code that uses lock against not other processors but other bus
> masters. The ECC code is one example. 

It's a bad hack anyways. Better would be probably to use a uncached WC write.
I would rather use that.

-Andi
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