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=-4.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 D6FF3C433DB for ; Thu, 14 Jan 2021 19:53:21 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 79F2A2343B for ; Thu, 14 Jan 2021 19:53:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 79F2A2343B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=perches.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Date:To:From: Subject:Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=79OinL/EKHRNxlum1nyN24Pu32Rj/8POHpBH+4jII7w=; b=ASV3f7qxKka6yopPMrPhireCv xsUj7xNlzNCuB+6mCz6fqhDy8DqGd1FnC/kdBmOoZJ6V4Udg3Fli4nr5lZ52jj+jQ4tLEdnCtMoTW EwDy8Z55D7Uafr9doyPQLW4io4T93Sx4wqXnw1wEkyLqZgN7aztIawhQ4p1PmqZK6j9Vi9wJP/O28 eM6P9aZz7aigx8fc/obRan0qY28syGZrg/e8Iv16uuA4+ydK2kD2XiKeLgQ6Duc0TDmDmGxd+bJ6f E61PS8it2W0t0QMjQibG8bDZIzwf4hk2Q++4ed1UR7tn6O6/uuHLbBo63BHLJAIPsPyYYoFw5Qfo3 NEFwKTp+Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l08f5-0001rW-17; Thu, 14 Jan 2021 19:52:03 +0000 Received: from smtprelay0089.hostedemail.com ([216.40.44.89] helo=smtprelay.hostedemail.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l08f3-0001qz-3P for linux-arm-kernel@lists.infradead.org; Thu, 14 Jan 2021 19:52:02 +0000 Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60]) by smtprelay02.hostedemail.com (Postfix) with ESMTP id 222B01E02; Thu, 14 Jan 2021 19:51:58 +0000 (UTC) X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: rain54_480ec0327529 X-Filterd-Recvd-Size: 2836 Received: from [192.168.1.159] (unknown [47.151.137.21]) (Authenticated sender: joe@perches.com) by omf01.hostedemail.com (Postfix) with ESMTPA; Thu, 14 Jan 2021 19:51:55 +0000 (UTC) Message-ID: Subject: Re: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for arm64 From: Joe Perches To: Linus Torvalds , Ard Biesheuvel Date: Thu, 14 Jan 2021 11:51:53 -0800 In-Reply-To: References: <20210112224832.10980-1-will@kernel.org> <161055398865.21762.12236232732054213928.b4-ty@arm.com> <20210113214436.GL1551@shell.armlinux.org.uk> User-Agent: Evolution 3.38.1-1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210114_145201_181191_F8024718 X-CRM114-Status: GOOD ( 16.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Florian Weimer , Arnd Bergmann , Theodore Ts'o , Will Deacon , Peter Zijlstra , Catalin Marinas , Masahiro Yamada , Nick Desaulniers , Russell King - ARM Linux admin , Linux Kernel Mailing List , "Cc: Android Kernel" , linux-arm-kernel Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 2021-01-14 at 10:43 -0800, Linus Torvalds wrote: > On Thu, Jan 14, 2021 at 12:18 AM Ard Biesheuvel wrote: > > > > So if the arguments are piling up, what is holding us back, other than > > inertia? > > I think we can most certainly just try increasing the minimum version > to 5.1 in the next merge window and see. > > > Note that banning 4.9 for arm64 and banning it in general should be > > two different changes in any case, as the former will need to be > > backported to -stable kernels as well. > > Yes. The arm64 issue is a clear and known bug, plus I suspect gcc-4.9 > is ridiculously old in the arm64 ecosystem anyway. > > So the arm64 issue is a bug-fix, the follow-up of just upgrading gcc > requirements in general would be a "keep up with the times, and allow > those variable declarations in loops". Given the upgrade requirement, and how clang version requirements constantly change, how much more difficult would it be for others to use gcc 7.1 or higher now instead of later? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel