Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752689AbYL0Jsi (ORCPT ); Sat, 27 Dec 2008 04:48:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754120AbYL0Js0 (ORCPT ); Sat, 27 Dec 2008 04:48:26 -0500 Received: from pfepb.post.tele.dk ([195.41.46.236]:59384 "EHLO pfepb.post.tele.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752567AbYL0JsZ (ORCPT ); Sat, 27 Dec 2008 04:48:25 -0500 Date: Sat, 27 Dec 2008 10:49:55 +0100 From: Sam Ravnborg To: David Miller Cc: akpm@linux-foundation.org, sparclinux@vger.kernel.org, mingo@elte.hu, sfr@canb.auug.org.au, linux-kernel@vger.kernel.org, kenchen@google.com, paulus@samba.org, tglx@linutronix.de, hpa@zytor.com, linux-next@vger.kernel.org Subject: Re: [PATCH] sparc64: use unsigned long long for u64 Message-ID: <20081227094955.GA1355@uranus.ravnborg.org> References: <20081223131746.GA7456@uranus.ravnborg.org> <20081227.005452.261413194.davem@davemloft.net> <20081227092404.GA10375@uranus.ravnborg.org> <20081227.013712.63335017.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081227.013712.63335017.davem@davemloft.net> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2173 Lines: 38 On Sat, Dec 27, 2008 at 01:37:12AM -0800, David Miller wrote: > From: Sam Ravnborg > Date: Sat, 27 Dec 2008 10:24:04 +0100 > > > So it looks like my gcc does not promote: > > ((tagval & 0x0fffffff00000000UL) >> 19UL) to unsigned long long int > > but your gcc does? > > > > My gcc (build with Dan Kegel's crosstool): > > $ /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -v > > Reading specs from /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/lib/gcc/sparc64-unknown-linux-gnu/3.4.5/specs > > Configured with: /home/sam/devel/crosstool-0.43/build/sparc64-unknown-linux-gnu/gcc-3.4.5-glibc-2.3.6/gcc-3.4.5/configure --target=sparc64-unknown-linux-gnu --host=i686-host_pc-linux-gnu --prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu --disable-multilib --with-cpu=ultrasparc3 --enable-cxx-flags=-mcpu=ultrasparc3 --with-headers=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu/include --with-local-prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu --disable-nls --enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit --enable-languages=c --enable-shared --enable-c99 --enable-long-long > > Thread model: posix > > gcc version 3.4.5 > > I'm using a native gcc-4.1.3 here: > > gcc (GCC) 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) > > When you cross build 32-bit to 64-bit, a small but non-zero > number of warning checks and optimizations are not performed > and I think that is what you're hitting here. OK. I have ordered a used Sun Blade 100(*) that should show up before new eve. So when I have it and it is up and running I will redo this patch set. That will likely take a few weeks though. (*) Any distribution recommendations? I will only use it for sparc kernel development so nothing fancy... Sam -- 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/