From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6? Date: Fri, 16 Dec 2016 23:00:27 +0100 Message-ID: <2778134.jZdhGefl4B@wuerfel> References: <20161216105634.235457-1-arnd@arndb.de> <20161216170043.taaanbg5objnxjlh@breakpoint.cc> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id A2EBB40457 for ; Fri, 16 Dec 2016 16:59:27 -0500 (EST) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IzXbIbplNNKC for ; Fri, 16 Dec 2016 16:59:26 -0500 (EST) Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.130]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 79AC5403F5 for ; Fri, 16 Dec 2016 16:59:25 -0500 (EST) In-Reply-To: <20161216170043.taaanbg5objnxjlh@breakpoint.cc> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: Sebastian Andrzej Siewior Cc: linux-arch@vger.kernel.org, linux-kbuild@vger.kernel.org, kernel-build-reports@lists.linaro.org, linux-kernel@vger.kernel.org, Russell King , Geert Uytterhoeven , Andrew Morton , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@vger.kernel.org List-Id: kvmarm@lists.cs.columbia.edu On Friday, December 16, 2016 6:00:43 PM CET Sebastian Andrzej Siewior wrote: > On 2016-12-16 11:56:21 [+0100], Arnd Bergmann wrote: > > The original gcc-4.3 release was in early 2008. If we decide to still > > support that, we probably want the first 10 quirks in this series, > > while gcc-4.6 (released in 2011) requires none of them. > > It this min gcc thingy ARM only? This is part of the question that I'm trying to figure out myself. Clearly having the same minimum version across all architectures simplifies things a lot, because many of the bugs in old versions are architecture independent. Then again, some architectures implicitly require a new version because an old one never existed (e.g. arm64 or risc-v), while some other architectures may require an old version. Arnd