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

[Ingo Molnar]

* Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:

> You won't bisect obscure timing triggered problems, and the _p users 
> are almost all for hardware where performance doesn't matter one iota 
> (eg CMOS).

actually, people have, and i have too. But i agree that io_delay=none 
would be stupid now, and would probably be stupid in v2.6.26 too.

i also have a debug patch that counts the number of _p() API uses and 
prints a stacktrace (once per bootup) if it occurs [wrote it 2 weeks 
ago] - so i agree with you that we can do this more gradually and more 
intelligently. As long as it does not turn into a BKL situation. It's 
2008 in a day and we've still got the NFS client code running under the 
BKL - quite ridiculous IMO.

	Ingo
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