Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 17 Dec 2002 09:25:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 17 Dec 2002 09:25:13 -0500 Received: from pc2-cwma1-4-cust86.swan.cable.ntl.com ([213.105.254.86]:8418 "EHLO irongate.swansea.linux.org.uk") by vger.kernel.org with ESMTP id ; Tue, 17 Dec 2002 09:25:13 -0500 Subject: Re: Intel P6 vs P7 system call performance From: Alan Cox To: Andre Hedrick Cc: Linus Torvalds , Dave Jones , Ingo Molnar , Linux Kernel Mailing List , hpa@transmeta.com In-Reply-To: References: Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.8 (1.0.8-10) Date: 17 Dec 2002 15:12:56 +0000 Message-Id: <1040137976.20018.3.camel@irongate.swansea.linux.org.uk> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 728 Lines: 18 On Tue, 2002-12-17 at 09:45, Andre Hedrick wrote: > > Linus, > > 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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/