From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1424191AbcFHJoJ (ORCPT ); Wed, 8 Jun 2016 05:44:09 -0400 Received: from terminus.zytor.com ([198.137.202.10]:55850 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423288AbcFHJoH (ORCPT ); Wed, 8 Jun 2016 05:44:07 -0400 Subject: Re: [PATCH 02/10] x86, asm: use bool for bitops and other assembly outputs To: Peter Zijlstra References: <1465342269-492350-1-git-send-email-hpa@linux.intel.com> <1465342269-492350-3-git-send-email-hpa@linux.intel.com> <20160608074956.GO30154@twins.programming.kicks-ass.net> <20160608082835.GB9645@gmail.com> <20160608083340.GC9645@gmail.com> <02ee64ce-257a-ba93-1f49-6877f5e4f6db@zytor.com> <20160608090111.GA11390@gmail.com> <88387994-fbf1-83dd-d58d-343498776a11@zytor.com> <20160608092040.GA17389@gmail.com> <9ce48c59-4b9c-bd48-ce07-b230376fba0f@zytor.com> <20160608093947.GQ30154@twins.programming.kicks-ass.net> Cc: Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Linux Kernel Mailing List , Andy Lutomirski , Borislav Petkov , Linus Torvalds , Arnd Bergmann From: "H. Peter Anvin" Message-ID: <990829a2-036a-c1c7-35ac-d5dfecaa7b0d@zytor.com> Date: Wed, 8 Jun 2016 02:43:14 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 MIME-Version: 1.0 In-Reply-To: <20160608093947.GQ30154@twins.programming.kicks-ass.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/08/16 02:39, Peter Zijlstra wrote: > > So I think using bool as return type or argument is fine, using it in > structures is 'insane'. > Yes, scalar use only, and not across the kernel boundary, please. -hpa