linux-kernel - Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override.

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Date:	Tue, 08 Jan 2008 00:26:13 +0100
From:	Rene Herman <rene.herman@...access.nl>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Bodo Eggert <7eggert@....de>,
	Christer Weinigel <christer@...nigel.se>,
	Ingo Molnar <mingo@...e.hu>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	"David P. Reed" <dpreed@...d.com>, Paul Rolland <rol@...917.net>,
	Pavel Machek <pavel@....cz>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	rol@...be.net
Subject: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override.

On 08-01-08 00:24, H. Peter Anvin wrote:

> Rene Herman wrote:
>>
>> Is this only about the ones then left for things like legacy PIC and 
>> PIT? Does anyone care about just sticking in a udelay(2) (or 1) there 
>> as a replacement and call it a day?
>>
> 
> PIT is problematic because the PIT may be necessary for udelay setup.

Yes, can initialise loops_per_jiffy conservatively. Just didn't quite get 
why you guys are talking about an ISA bus speed parameter.

Rene.


Rene.
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