From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161351AbcFHFJ2 (ORCPT ); Wed, 8 Jun 2016 01:09:28 -0400 Received: from mail-oi0-f47.google.com ([209.85.218.47]:36161 "EHLO mail-oi0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932597AbcFHFJ1 (ORCPT ); Wed, 8 Jun 2016 01:09:27 -0400 MIME-Version: 1.0 In-Reply-To: <1465342269-492350-5-git-send-email-hpa@linux.intel.com> References: <1465342269-492350-1-git-send-email-hpa@linux.intel.com> <1465342269-492350-5-git-send-email-hpa@linux.intel.com> From: Andy Lutomirski Date: Tue, 7 Jun 2016 22:09:07 -0700 Message-ID: Subject: Re: [PATCH 04/10] x86, asm: define CC_SET() and CC_OUT() macros To: "H. Peter Anvin" Cc: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Linux Kernel Mailing List , Peter Zijlstra , Borislav Petkov Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 7, 2016 at 4:31 PM, H. Peter Anvin wrote: > From: "H. Peter Anvin" > > The CC_SET() and CC_OUT() macros can be used together to take > advantage of the new __GCC_ASM_FLAG_OUTPUTS__ feature in gcc 6+ while > remaining backwards compatible. CC_SET() generates a SET instruction > on older compilers; CC_OUT() makes sure the output is received in the > correct variable. Nice. Reviewed-by: Andy Lutomirski