Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268824AbUILTkv (ORCPT ); Sun, 12 Sep 2004 15:40:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268831AbUILTkv (ORCPT ); Sun, 12 Sep 2004 15:40:51 -0400 Received: from pimout1-ext.prodigy.net ([207.115.63.77]:36555 "EHLO pimout1-ext.prodigy.net") by vger.kernel.org with ESMTP id S268824AbUILTkt (ORCPT ); Sun, 12 Sep 2004 15:40:49 -0400 Date: Sun, 12 Sep 2004 12:40:36 -0700 From: Chris Wedgwood To: Ingo Molnar Cc: Lee Revell , Arjan van de Ven , Andrea Arcangeli , Hugh Dickins , "Martin J. Bligh" , Andrea Arcangeli , Alan Cox , LKML , Christoph Hellwig Subject: Re: [PATCH 1/3] Separate IRQ-stacks from 4K-stacks option Message-ID: <20040912194036.GA8391@taniwha.stupidest.org> References: <593560000.1094826651@[10.10.2.4]> <20040910151538.GA24434@devserv.devel.redhat.com> <20040910152852.GC15643@x30.random> <20040910153421.GD24434@devserv.devel.redhat.com> <1095016687.1306.667.camel@krustophenia.net> <20040912192515.GA8165@taniwha.stupidest.org> <20040912193542.GB28791@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040912193542.GB28791@elte.hu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 698 Lines: 18 On Sun, Sep 12, 2004 at 09:35:42PM +0200, Ingo Molnar wrote: > no. A 2 msec nonpreemptable delay is a 2 msec delay, irqs on or off > alike. maybe im retarded, 2ms seems like a long time --- is this strictly necessary on modern chipsets? surely we can fix the code to not do this for most people without hosing their data? > but it's not a big problem with IRQ threading, there most hardirqs > are preemptable. most? what determines which and when? - 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/