Re: ISA slot detection on PCI systems?

From: H. Peter Anvin (
Date: Sat Jan 05 2002 - 02:03:24 EST

Followup to: <>
By author: Vojtech Pavlik <>
In newsgroup:
> It's still not very nice for userspace apps to touch hardware directly,
> even if it's just BIOS memory ...

Red herring. It's not very nice for *applications* to not indirect
through a driver, but if that driver is in userspace or kernel space
is irrelevant. Incidentally, "applications" here include a lot of the
parsers that produce /proc output. /proc/pci is occationally handy,
but it is also an example on why you shouldn't do data reduction in
kernel space unless you can avoid it. Now /proc/bus/pci is available
and contains all the data, however.


<> at work, <> in private!
"Unix gives you enough rope to shoot yourself in the foot."	<>
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