From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52240) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1wGT-0004n2-4t for qemu-devel@nongnu.org; Thu, 26 Nov 2015 08:07:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a1wGN-0000P3-Sr for qemu-devel@nongnu.org; Thu, 26 Nov 2015 08:07:09 -0500 Received: from mail-wm0-x233.google.com ([2a00:1450:400c:c09::233]:37192) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1wGN-0000Oy-MS for qemu-devel@nongnu.org; Thu, 26 Nov 2015 08:07:03 -0500 Received: by wmww144 with SMTP id w144so21874554wmw.0 for ; Thu, 26 Nov 2015 05:07:03 -0800 (PST) Sender: Paolo Bonzini References: <1448471956-66873-1-git-send-email-pbonzini@redhat.com> <5656E194.10609@redhat.com> <5656EBA3.90703@redhat.com> <87r3jd3qjy.fsf@blackfin.pond.sub.org> From: Paolo Bonzini Message-ID: <565703F5.6040205@redhat.com> Date: Thu, 26 Nov 2015 14:07:01 +0100 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PULL 0/9] Misc patches for QEMU 2.5-rc2 (2015-11-25) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell , Markus Armbruster Cc: QEMU Developers On 26/11/2015 13:19, Peter Maydell wrote: > On 26 November 2015 at 12:15, Markus Armbruster wrote: >> Peter Maydell writes: >>> I don't see much point in documenting what we rely on >>> if we can't rely on it and need to stop relying on it. >> >> "Can't" and "need" are too strong. The kernel can, and I fail to see >> what makes us so special that we absolutely cannot. > > The kernel has the luxury of being able to say "we only compile > with gcc". Actually no, there are people interested in compiling it with clang (mostly because of GPL FUD and LLVM koolaid, but that's secondary in this context). >> For what it's worth, I'm sick and tired of patches "fixing" signed >> shifts, and the unnecessary risk that comes with them. > > Me too. Great, that's a start. And I'm totally not sarcastic about this. Paolo > I just want us to fix this by getting the compiler authors > to document that we can rely on this stuff, not just by silencing > warnings in QEMU's makefiles.