From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F065C43441 for ; Thu, 29 Nov 2018 13:07:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F2B5205C9 for ; Thu, 29 Nov 2018 13:07:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="EG5gUh1H" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3F2B5205C9 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728387AbeK3AMp (ORCPT ); Thu, 29 Nov 2018 19:12:45 -0500 Received: from mail.skyhub.de ([5.9.137.197]:43702 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727040AbeK3AMp (ORCPT ); Thu, 29 Nov 2018 19:12:45 -0500 Received: from nazgul.tnic (x59cc8ba7.dyn.telefonica.de [89.204.139.167]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id D17F11EC078A; Thu, 29 Nov 2018 14:07:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1543496845; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=mrr4udWC5AWSesai7D93uCElVvO536RVjWPQpvZg0D4=; b=EG5gUh1HPTQKiPHnAXUHn9ywHZeT+Kgww7jo1Pj+xQma4WoBhrnmSiOLOztGY6i16sNkwy E9DgO3KHPTuCUTWfEgiDVyxlimUefXOwarwypdLcBnOOJtp0BmPGbQJ+EvXuVT/sJ/zDEY Aynna9TkvrLvzVKjb3orCFCp75tZ9kk= Date: Thu, 29 Nov 2018 14:07:18 +0100 From: Borislav Petkov To: Masahiro Yamada Cc: Segher Boessenkool , Nadav Amit , Ingo Molnar , "H. Peter Anvin" , rguenther@suse.de, matz@suse.de, gcc@gcc.gnu.org, Linux Kernel Mailing List , X86 ML , Sam Ravnborg , Alok Kataria , Christopher Li , Greg Kroah-Hartman , Jan Beulich , Josh Poimboeuf , Juergen Gross , Kate Stewart , Kees Cook , linux-sparse@vger.kernel.org, "Peter Zijlstra (Intel)" , Philippe Ombredanne , Thomas Gleixner , virtualization@lists.linux-foundation.org, Linus Torvalds , Chris Zankel , Max Filippov , linux-xtensa@linux-xtensa.org Subject: Re: PROPOSAL: Extend inline asm syntax with size spec Message-ID: <20181129130718.GA3070@nazgul.tnic> References: <20181003213100.189959-1-namit@vmware.com> <20181007091805.GA30687@zn.tnic> <20181007132228.GJ29268@gate.crashing.org> <20181008073128.GL29268@gate.crashing.org> <20181009145330.GT29268@gate.crashing.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.0 (2016-04-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 29, 2018 at 08:46:34PM +0900, Masahiro Yamada wrote: > But, I'd like to ask if x86 people want to keep this macros.s approach. > Revert 77b0bf55bc675 right now > assuming the compiler will eventually solve the issue? Yap, considering how elegant the compiler solution is and how much problems this macros-in-asm thing causes, I think we should patch out the latter and wait for gcc9. I mean, the savings are not so mind-blowing to have to deal with the fallout. But this is just my opinion. Thx. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. --