Date: Sun, 30 Dec 2007 19:43:16 +0100
From: Andi Kleen <andi@firstfloor.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>, Rene Herman <rene.herman@keyaccess.nl>,
       Linus Torvalds <torvalds@linux-foundation.org>, dpreed@reed.com,
       Islam Amer <pharon@gmail.com>, hpa@zytor.com,
       Pavel Machek <pavel@ucw.cz>, Ingo Molnar <mingo@redhat.com>,
       Andi Kleen <andi@firstfloor.org>, Thomas Gleixner <tglx@linutronix.de>,
       Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override
Message-ID: <20071230184316.GB2061@one.firstfloor.org>
References: <477711DC.5030800@keyaccess.nl> <alpine.LFD.1.00.0712300124440.32517@woody.linux-foundation.org> <20071230144700.78f4605c@the-village.bc.nu> <20071230152835.GX16946@elte.hu> <4777BDA5.4050203@keyaccess.nl> <20071230160751.GB26221@elte.hu> <4777C6E8.7060202@keyaccess.nl> <20071230170612.GA16502@elte.hu> <20071230182937.40f2adcf@the-village.bc.nu>
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> A 2.6.26 plan for io_delay=none is very very foolish indeed. We don't burn

It also seems quite risky to me; at least if not paired with a DMI 
year master switch. 

Switching to udelay() by default should be probably ok though.

-Andi
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