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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0FFDC10DC3 for ; Mon, 4 Dec 2023 18:26:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231303AbjLDS02 (ORCPT ); Mon, 4 Dec 2023 13:26:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230368AbjLDS0P (ORCPT ); Mon, 4 Dec 2023 13:26:15 -0500 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A88C192 for ; Mon, 4 Dec 2023 10:26:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Bwa+mWa9t9Jyqa5fhOpyXs9O2/cRDmN3kPMWCUex0Jc=; b=k9XwJYVGkMrMDLoLh4nAjQ10yB JA82oqtLwxB4l8ixHe0Q1l6os0C5NTD7yuLM1NPFI3oCR9SvPLcyltEikswkChKWWqoNeYfmdIs5B NNd0/t8gi9tN7LlZJxFuVvV3JPPPgOCF1mmBzPFFBG/ilKFFIcD6EiskOCj7Osg5lmsWu164eg+a+ h6bvegq1DwigISF2gmGAZmZmvKykmF0Bwb4K1RpJRxZx1XW/lzfsX2hTO2bYy78knkwHgDDp4N2zp Fr3v/V4Rbny7qCaUtk3KIo2+2/ZKGZ+fRLOHwgjrQ5ugtQwoXLFK7np4jVt9iWBnlmaRfURNeWeW9 OMUuOnBg==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:32798) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rADe1-0005u1-1B; Mon, 04 Dec 2023 18:26:13 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1rADe3-0000th-5Q; Mon, 04 Dec 2023 18:26:15 +0000 Date: Mon, 4 Dec 2023 18:26:15 +0000 From: "Russell King (Oracle)" To: Nathan Chancellor Cc: Naresh Kamboju , clang-built-linux , Linux ARM , open list , Linux Regressions , lkft-triage@lists.linaro.org, Arnd Bergmann , Nick Desaulniers Subject: Re: clang-nightly: vdso/compat_gettimeofday.h:152:15: error: instruction variant requires ARMv6 or later Message-ID: References: <20231204181304.GA2043538@dev-arch.thelio-3990X> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231204181304.GA2043538@dev-arch.thelio-3990X> Sender: Russell King (Oracle) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 04, 2023 at 11:13:04AM -0700, Nathan Chancellor wrote: > Hi Naresh, > > On Mon, Dec 04, 2023 at 05:33:26PM +0530, Naresh Kamboju wrote: > > Following build errors noticed on Linux next-20231204 tag with clang-nightly > > for arm and arm64. > > > > ## Test Regressions (compared to next-20231201) > > * arm64, build > > - clang-nightly-defconfig > > - clang-nightly-defconfig-40bc7ee5 > > - clang-nightly-lkftconfig > > - clang-nightly-lkftconfig-kselftest > > > > * arm, build > > - clang-nightly-allnoconfig > > - clang-nightly-axm55xx_defconfig > > - clang-nightly-bcm2835_defconfig > > - clang-nightly-clps711x_defconfig > > - clang-nightly-defconfig > > - clang-nightly-exynos_defconfig > > - clang-nightly-imx_v6_v7_defconfig > > - clang-nightly-keystone_defconfig > > - clang-nightly-lkftconfig > > - clang-nightly-lkftconfig-kselftest > > - clang-nightly-omap2plus_defconfig > > - clang-nightly-pxa910_defconfig > > - clang-nightly-s3c6400_defconfig > > - clang-nightly-s5pv210_defconfig > > - clang-nightly-sama5_defconfig > > - clang-nightly-shmobile_defconfig > > - clang-nightly-tinyconfig > > - clang-nightly-u8500_defconfig > > - clang-nightly-vexpress_defconfig > > > > > > Reported-by: Linux Kernel Functional Testing > > > > > > Build log on arm64: > > --------- > > In file included from lib/vdso/gettimeofday.c:5: > > In file included from include/vdso/datapage.h:135: > > arch/arm64/include/asm/vdso/compat_gettimeofday.h:152:15: error: > > instruction variant requires ARMv6 or later > > 152 | asm volatile("mov %0, %1" : "=r"(ret) : "r"(_vdso_data)); > > | ^ > > :1:2: note: instantiated into assembly here > > 1 | mov r4, r1 > > | ^ I have to wonder why Clang is complaining about "mov r4, r1" because that certainly should not require "ARMv6 or later". On the face of it, this to me looks like a bug in Clang. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!