From: Arjan van de Ven <arjanv@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jamie Lokier <jamie@shareable.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Can we kill f inb_p, outb_p and other random I/O on port 0x80, in 2.6?
Date: Mon, 22 Sep 2003 19:11:31 +0200 [thread overview]
Message-ID: <1064250691.6235.2.camel@laptop.fenrus.com> (raw)
In-Reply-To: <1064248391.8895.6.camel@dhcp23.swansea.linux.org.uk>
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On Mon, 2003-09-22 at 18:33, Alan Cox wrote:
\
> > I've also seen much DOS code that didn't have extra delays for
> > keyboard I/Os. What sort of breakage did you observe with the
> > keyboard?
>
> DEC laptops hang is the well known example of that one.
>
> I'm *for* making this change to udelay, it just has to start up with a
> suitably pessimal udelay assumption until calibrated.
or we make udelay() do the port 80 access in the uncalibrated case....
The first person to complain about the extra branch miss in udelay for
this will get laughed at by me ;)
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next prev parent reply other threads:[~2003-09-22 17:11 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-22 0:27 Eric W. Biederman
2003-09-22 11:22 ` Alan Cox
2003-09-22 16:26 ` Jamie Lokier
2003-09-22 16:33 ` Alan Cox
2003-09-22 17:11 ` Arjan van de Ven [this message]
2003-09-22 18:28 ` Jamie Lokier
2003-09-22 19:09 ` Eric W. Biederman
2003-09-22 19:27 ` Arjan van de Ven
2003-09-22 21:46 ` Jamie Lokier
2003-09-23 18:17 ` bill davidsen
2003-09-22 18:58 ` Eric W. Biederman
2003-09-22 19:19 ` Jamie Lokier
2003-09-23 0:09 ` Alan Cox
2003-09-23 18:20 ` bill davidsen
2003-09-22 19:00 ` Jamie Lokier
2003-09-22 20:05 ` Eric W. Biederman
2003-09-23 18:31 ` bill davidsen
2003-09-23 0:13 ` Alan Cox
[not found] <20030922153651.16497.qmail@science.horizon.com>
2003-09-22 18:35 ` Eric W. Biederman
2003-09-22 21:54 ` Jamie Lokier
2003-09-23 18:41 ` bill davidsen
2003-09-24 17:43 ` Linus Torvalds
2003-09-22 20:03 John Bradford
2003-09-22 21:37 ` Jamie Lokier
2003-09-22 21:42 ` Arjan van de Ven
2003-09-23 0:16 ` Alan Cox
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