Re: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80I/O delay override.
From: Rene Herman
Date: Fri Jan 11 2008 - 09:53:15 EST
On 11-01-08 15:35, David P. Reed wrote:
Rene Herman wrote:
On 11-01-08 02:36, Zachary Amsden wrote:
FWIW, I fixed the problem locally by recompiling, changing port 80 to
port 84 in io.h; works great, and doesn't conflict with any occupied
ports.
Might not give you a "proper" delay though. 0xed should be a better
choice...
I don't think there is any magic here.
Golly, you don't think so? Just commenting on his local hack. Port 0x84 is
inside the (reserved) DMA page register range and stands a better chance of
not being echoed onto ISA by various chipsets than 0xed does due to that.
Yes -- on a sane machine it's all useless anyway and with all sane machines
this discussion would've ended quite some time ago already. It's the insane,
obsolete legacy junk that's the problem.
Rene.
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