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

From: Ingo Molnar
Date: Tue Jan 01 2008 - 11:49:39 EST



* Pavel Machek <pavel@xxxxxx> wrote:

> > well, using io_delay=udelay is not 'blindly disabling'.
> > io_delay=none would be the end goal, once all _p() API uses are
> > eliminated by transformation. In drivers/ alone that's more than
> > 1000 callsites, so it's quite frequently used, and wont go away
> > overnight.
>
> IOW elimination of broken inb_p()/outb_p() interfaces is the ultimate
> goal. Agreed.

yeah - although i'd not call it "broken", it's simply historic, and due
to the side-effects of the _implementation_, a few non-standard uses
(such as reliance on PCI posting/flushing effects) grew.

Ingo
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