Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932517AbXB1Wb4 (ORCPT ); Wed, 28 Feb 2007 17:31:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932567AbXB1Wb4 (ORCPT ); Wed, 28 Feb 2007 17:31:56 -0500 Received: from tmailer.gwdg.de ([134.76.10.23]:49906 "EHLO tmailer.gwdg.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932517AbXB1Wbz (ORCPT ); Wed, 28 Feb 2007 17:31:55 -0500 Date: Wed, 28 Feb 2007 23:30:13 +0100 (MET) From: Jan Engelhardt To: Ian Molton cc: Andrew Morton , Stephen Hemminger , linux-kernel@vger.kernel.org Subject: Re: [PATCH] udivdi3: 64 bit divide In-Reply-To: <45E4B33D.8080705@f2s.com> Message-ID: References: <20070226173517.66bf0fec@freekitty> <20070227122437.da27c3cd.akpm@linux-foundation.org> <20070227131840.672d6932@localhost> <20070227133656.c452fbb4.akpm@linux-foundation.org> <20070227222430.GC10380@flint.arm.linux.org.uk> <45E4B33D.8080705@f2s.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Report: Content analysis: 0.0 points, 6.0 required _SUMMARY_ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1376 Lines: 37 On Feb 27 2007 22:39, Ian Molton wrote: > Russell King wrote: >> On Tue, Feb 27, 2007 at 01:36:56PM -0800, Andrew Morton wrote: >> > On Tue, 27 Feb 2007 13:18:40 -0800 Stephen Hemminger >> > wrote: >> > > Then we should pull the existing udivdi3 implementations? >> > > >> > Not much point really. Some architectures have gone >> > and done that, but x86 has not. x86 has enough >> > coverage for us to pick up most problems, and any >> > remaining problems are obviously in scruffy >> > architectures which don't care about performance ;) >> >> I doubt arm26 uses udivdi3, but that's something Ian >> would have to confirm. > > I doubt it is used also, however I am not in a position > to test this until at least after I have moved house. > Please leave alone for now. Simple. The non-arch specific code does not use 64/64 divides through the "/" operator (otherwise there would already have been udivdi3 linking errors). So what remains to check is arch/arm26. grep -Pr 'int64|\bu64' returns only a few results to check (kernel/ecard.c, nwfpe/), so the answer is most likely no. Jan -- - 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/