From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261798AbTDURhZ (ORCPT ); Mon, 21 Apr 2003 13:37:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261801AbTDURhZ (ORCPT ); Mon, 21 Apr 2003 13:37:25 -0400 Received: from notes.hallinto.turkuamk.fi ([195.148.215.149]:5636 "EHLO notes.hallinto.turkuamk.fi") by vger.kernel.org with ESMTP id S261798AbTDURhW convert rfc822-to-8bit (ORCPT ); Mon, 21 Apr 2003 13:37:22 -0400 Message-ID: <3EA43080.70204@kolumbus.fi> Date: Mon, 21 Apr 2003 20:55:12 +0300 From: =?ISO-8859-1?Q?Mika_Penttil=E4?= User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.2) Gecko/20030208 Netscape/7.02 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Zwane Mwaikambo CC: Chuck Ebbert <76306.1226@compuserve.com>, linux-kernel Subject: Re: [PATCH] 2.5.68 Fix IO_APIC IRQ assignment bug References: <200304210351_MC3-1-3544-3713@compuserve.com> <3EA41684.6030502@kolumbus.fi> X-MIMETrack: Itemize by SMTP Server on marconi.hallinto.turkuamk.fi/TAMK(Release 5.0.8 |June 18, 2001) at 21.04.2003 20:50:24, Serialize by Router on notes.hallinto.turkuamk.fi/TAMK(Release 5.0.10 |March 22, 2002) at 21.04.2003 20:50:00, Serialize complete at 21.04.2003 20:50:00 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org yes the current code has the assumption of 1to1 mapping from vector to irq, but that's a software limitation. --Mika Zwane Mwaikambo wrote: >On Mon, 21 Apr 2003, Mika Penttilä wrote: > > > >>Why can't we use the same vector for multiple ioapic entrys? After all, >>we are already sharing irqs, and an irq is just a cookie for a vector. >>What do you mean with "lost irq routing" ? >> >> > >Each ioredtbl can take a vector, if you assign another ioredtbl with the >same vector and different IRQ then you collide with the previous entry and >wipe it from the IDT. Also irq != vector > > Zwane > >- >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/ > > >