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Date: Thu, 19 Dec 2002 00:55:46 +0100
From: Pavel Machek <pavel@ucw.cz>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andre Hedrick <andre@linux-ide.org>,
       Linus Torvalds <torvalds@transmeta.com>,
       Dave Jones <davej@codemonkey.org.uk>, Ingo Molnar <mingo@elte.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       hpa@transmeta.com
Subject: Re: Intel P6 vs P7 system call performance
Message-ID: <20021218235546.GD705@elf.ucw.cz>
References: <Pine.LNX.4.10.10212170144030.31876-100000@master.linux-ide.org> <1040137976.20018.3.camel@irongate.swansea.linux.org.uk>
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Hi!

> > Are you serious about moving of the banging we currently do on 0x80?
> > If so, I have a P4 development board with leds to monitor all the lower io
> > ports and can decode for you.
> 
> Different thing - int 0x80 syscall not i/o port 80. I've done I/O port
> 80 (its very easy), but requires we set up some udelay constants with an
> initial safety value right at boot (which we should do - we udelay
> before it is initialised)

Actually that would be nice -- I have leds on 0x80 too ;-).
								Pavel
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