linux-kernel - Re: [PATCH] x86: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.

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Message-ID: <47646BDE.5080006@zytor.com>
Date:	Sat, 15 Dec 2007 16:05:50 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Rene Herman <rene.herman@...il.com>
CC:	Paul Rolland <rol@...917.net>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Pavel Machek <pavel@....cz>, Ingo Molnar <mingo@...e.hu>,
	"David P. Reed" <dpreed@...d.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Rene Herman <rene.herman@...access.nl>, rol@...be.net
Subject: Re: [PATCH] x86: fix problems due to use of "outb" to port 80 on
 some AMD64x2 laptops, etc.

H. Peter Anvin wrote:
> 
> Note, however, that your code doesn't deal with io_delay()'s in the boot 
> code (arch/x86/boot) at all, nor (obviously) io_delay()'s in boot 
> loaders.  In the boot code, access to DMI data is NOT available (we 
> can't even use the INT 15h mover if we want to continue to support 
> Loadlin.)
>

Correction: DMI data are at least supposedly available via the PNPBIOS 
calls specified in the SMBIOS spec.

	-hpa
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