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=-5.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 17FA1C433DB for ; Fri, 8 Jan 2021 09:35:42 +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 B19C223372 for ; Fri, 8 Jan 2021 09:35:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B19C223372 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LMob2B7rIY6CdMwMTALrmQojLRQyqCA/rva7vxu6Aok=; b=kwQyxUIz/oWhYOL3s2vONDJK9 PuJu88spNlQeUTgMIGoSuULw0DFevjTsumNr5SF64FbyODSHVOJSS95CB/pqyS63KdSbhf2NYLa+m e5lTnsW1TmFbC0cW+4vANZ6dU3/4mCvHYxE9QyYEmCJzt4fAekRiwaRWOQpOzKp10zRdB65wybob2 8Nq4QOUSiNc1x0at0NNysHpTEmkUN/tx3yPxlYNhTEPs/xmOmOGYP1z4M+hPzF6u6FTsfPze+l1MP C+w0dg7gmfEGfyfehrVLZuYuIxZsCILHYweoSeeDecB3qb0MTExFxXtYa4psGNApg7MIuBU2VdH5M yXiVRLtsg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kxo8u-00063T-Ay; Fri, 08 Jan 2021 09:33:12 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kxo8n-00060i-D9 for linux-arm-kernel@lists.infradead.org; Fri, 08 Jan 2021 09:33:06 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 365F822BE8; Fri, 8 Jan 2021 09:33:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1610098384; bh=FbhPcDUndjAB6/H1OTOUBoWyx4YiqVFJQbRKF5EZ9PY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=XBAh5ke3xFCC21/4t0+IO8+LeZnsYAEC0R6ItjiQSI7InY6o3dZRqrB4iiupGt7xa VYRiwYGWeMJFUUAxhz6+aGGlbLR2fxRptKjEUvT+9B9ta2H2G8SAyyRyywBFORV95q 7fpkthtWE/KXuIuVGS0coDDfUjusg8xw4Wtq2GjR0LOysKvcKrBpuhcGhqg3gQFkdg Xw1rQ87+TsGU6Q5IYIZYAQ5uomGTZx8dm7azSnrtMtxXCb2VMZjol2G2bnoduru3sq mX4I8xjmuHXxzuBIDzGbU3KTabtbfybdZH8YXCOc4YS0tqsPKQBssXmR8NW81RIG9f rDTMfigP4y5mw== Date: Fri, 8 Jan 2021 09:32:58 +0000 From: Will Deacon To: Arnd Bergmann Subject: Re: [PATCH] arm64: make atomic helpers __always_inline Message-ID: <20210108093258.GB4031@willie-the-truck> References: <20210108092024.4034860-1-arnd@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210108092024.4034860-1-arnd@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210108_043305_569820_E25AD09E X-CRM114-Status: GOOD ( 15.10 ) 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: Mark Rutland , linux-arch@vger.kernel.org, Herbert Xu , Arnd Bergmann , Peter Zijlstra , Catalin Marinas , Boqun Feng , Nick Desaulniers , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Nathan Chancellor , Thomas Gleixner , linux-arm-kernel@lists.infradead.org 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 Hi Arnd, On Fri, Jan 08, 2021 at 10:19:56AM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann > > With UBSAN enabled and building with clang, there are occasionally > warnings like > > WARNING: modpost: vmlinux.o(.text+0xc533ec): Section mismatch in reference from the function arch_atomic64_or() to the variable .init.data:numa_nodes_parsed > The function arch_atomic64_or() references > the variable __initdata numa_nodes_parsed. > This is often because arch_atomic64_or lacks a __initdata > annotation or the annotation of numa_nodes_parsed is wrong. > > for functions that end up not being inlined as intended but operating > on __initdata variables. Mark these as __always_inline, along with > the corresponding asm-generic wrappers. Hmm, I don't fully grok this. Why does it matter if a non '__init' function is called with a pointer to some '__initdata'? Or is the reference coming from somewhere else? (where?). Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel