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=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 23F27C43387 for ; Sat, 22 Dec 2018 11:00:36 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 B9FD2219FD for ; Sat, 22 Dec 2018 11:00:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B9FD2219FD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43MMwd3ZFPzDr69 for ; Sat, 22 Dec 2018 22:00:33 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43MLT23zQnzDqX0 for ; Sat, 22 Dec 2018 20:55:02 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 43MLT217xxz9sPZ; Sat, 22 Dec 2018 20:55:01 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: e213574a449f7a57d4202c1869bbc7680b6b5521 X-Patchwork-Hint: ignore In-Reply-To: <20181102004455.10157-1-joel@jms.id.au> To: Joel Stanley , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org From: Michael Ellerman Subject: Re: [v2] raid6/ppc: Fix build for clang Message-Id: <43MLT217xxz9sPZ@ozlabs.org> Date: Sat, 22 Dec 2018 20:55:01 +1100 (AEDT) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jinsong Ji , Nick Desaulniers , Kees Cook , Arnd Bergmann Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, 2018-11-02 at 00:44:55 UTC, Joel Stanley wrote: > We cannot build these files with clang as it does not allow altivec > instructions in assembly when -msoft-float is passed. > > Jinsong Ji wrote: > > We currently disable Altivec/VSX support when enabling soft-float. So > > any usage of vector builtins will break. > > > > Enable Altivec/VSX with soft-float may need quite some clean up work, so > > I guess this is currently a limitation. > > > > Removing -msoft-float will make it work (and we are lucky that no > > floating point instructions will be generated as well). > > This is a workaround until the issue is resolved in clang. > > Link: https://bugs.llvm.org/show_bug.cgi?id=31177 > Link: https://github.com/ClangBuiltLinux/linux/issues/239 > Signed-off-by: Joel Stanley > Reviewed-by: Nick Desaulniers Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/e213574a449f7a57d4202c1869bbc7 cheers