Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 17 Dec 2002 14:49:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 17 Dec 2002 14:49:40 -0500 Received: from neon-gw-l3.transmeta.com ([63.209.4.196]:55560 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id ; Tue, 17 Dec 2002 14:49:39 -0500 Date: Tue, 17 Dec 2002 11:58:25 -0800 (PST) From: Linus Torvalds To: "Richard B. Johnson" cc: Alan Cox , Ulrich Drepper , Dave Jones , Ingo Molnar , Linux Kernel Mailing List , Subject: Re: Intel P6 vs P7 system call performance In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 559 Lines: 22 On Tue, 17 Dec 2002, Richard B. Johnson wrote: > > You can call intersegment with a full pointer. I don't know how > expensive that is. It's so expensive as to not be worth it, it's cheaper to load a register or something, i eyou can do pushl $0xfffff000 call *(%esp) faster than doing a far call. Linus - 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/