Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755953AbYHRW1V (ORCPT ); Mon, 18 Aug 2008 18:27:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752671AbYHRW1L (ORCPT ); Mon, 18 Aug 2008 18:27:11 -0400 Received: from accolon.hansenpartnership.com ([76.243.235.52]:41151 "EHLO accolon.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752332AbYHRW1K (ORCPT ); Mon, 18 Aug 2008 18:27:10 -0400 Subject: Re: [PATCH] pci: change msi-x vector to 32bit From: James Bottomley To: Alan Cox Cc: "Eric W. Biederman" , Yinghai Lu , "H. Peter Anvin" , Jesse Barnes , Ingo Molnar , Thomas Gleixner , Andrew Morton , linux-kernel@vger.kernel.org, Andrew Vasquez In-Reply-To: <20080818225105.42784da0@lxorguk.ukuu.org.uk> References: <200808160326.m7G3QR1G012726@terminus.zytor.com> <86802c440808152342m772d5eabs59a9c93ffe4cf557@mail.gmail.com> <1218898238.3940.6.camel@localhost.localdomain> <20080816163945.74d487e9@lxorguk.ukuu.org.uk> <1218903209.3940.14.camel@localhost.localdomain> <86802c440808161156rf48f23ai9d77ce3cab36f02a@mail.gmail.com> <1218918341.3940.49.camel@localhost.localdomain> <86802c440808161334q75a7d019ofade0b6cabf3f74d@mail.gmail.com> <1218919547.3940.57.camel@localhost.localdomain> <86802c440808161517y1eaa5a4eo817b8a1bf75945be@mail.gmail.com> <1218928162.3940.62.camel@localhost.localdomain> <1219093158.3261.70.camel@localhost.localdomain> <1219097061.3261.76.camel@localhost.localdomain> <20080818225105.42784da0@lxorguk.ukuu.org.uk> Content-Type: text/plain Date: Mon, 18 Aug 2008 17:27:04 -0500 Message-Id: <1219098424.3261.78.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 (2.22.3.1-1.fc9) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 928 Lines: 23 On Mon, 2008-08-18 at 22:51 +0100, Alan Cox wrote: > > > I completely agree that irq number 99.9% of the time should be a completely > > > abstract token. > > > > Sure, although one nice reason for doing the abstraction first is that > > it stops people imposing fragile numbering schemes on irq ... > > On a lot of embedded devices IRQ numbers are not abstract and not > fragile. I'm all for abstracting out interrupts nicely but it isn't just > the legacy PC cases to consider - a lot of embedded is at least as > defined, rigid and meaningfully numbered as ISA. So for these, the abstraction transformation is the identity ... meaning they behave as they always have. James -- 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/