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

["H. Peter Anvin" <hpa@zytor.com>]

Alan Cox wrote:
> On Sun, 30 Dec 2007 16:23:20 -0800
> "H. Peter Anvin" <hpa@zytor.com> wrote:
>
> > > continuing to investigate for a cause.  It would be nice if it were a 
> > > BIOS-fixable problem.  It would be even nicer if the BIOS were GPL...
> > If it was an SMM trap, I would expect it to be trapped in the SuperIO chip.
>
> Many SuperIO chips do port 0x80, but they do it over the LPC and they do
> it in hardware to the parallel port data lines. The timings posted for
> 0x80 on his box are really a bit fast for LPC.

Ah, that would eliminate the SuperIO chip.

	-hpa
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