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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 6F71FC433E0 for ; Wed, 10 Feb 2021 01:56:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 312FE64D87 for ; Wed, 10 Feb 2021 01:56:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234767AbhBJB4L (ORCPT ); Tue, 9 Feb 2021 20:56:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235152AbhBJAL0 (ORCPT ); Tue, 9 Feb 2021 19:11:26 -0500 Received: from mail-qv1-xf2d.google.com (mail-qv1-xf2d.google.com [IPv6:2607:f8b0:4864:20::f2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25CDAC06121F for ; Tue, 9 Feb 2021 16:08:10 -0800 (PST) Received: by mail-qv1-xf2d.google.com with SMTP id p12so69794qvv.5 for ; Tue, 09 Feb 2021 16:08:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Ppuq/KZFrn9+jxLzC4CJINR+3m1F6NDzElghV98D7B0=; b=UW3N3OfKTCbQTt3ljB/RqC7aMcXoo7h6HWheSRWT5GgvtpQQgaTEejnPFpacQzaUUs ZtcgfGYQIkq3iGaGvlnWLZ5IvQL8JnpX76NTZ80yc0vIROANnYVeUl3UxqdPO/QU2eWu PFG5IlNTB9Sy0p33V4IOs8slmuC9I8HFGlnlbLUG3AMR4ev5PAo2Zw4fleek3XdFl4Rx rF0CyUapeVpsEpqkU/6LuOHsv2aWumv3GeqwLDzFPDaL71aWjTHkmCdTLcCvHVqPYwFS r0nlhEn4mlvM2Zb3xq93XDtVDtCBFKnTexl0OAiq+tzW+DPmqZYaXKLZxVDu1EhQIHqU ZK7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Ppuq/KZFrn9+jxLzC4CJINR+3m1F6NDzElghV98D7B0=; b=dOQdoTLh/wsWiqJ7mWTmIOECyoYCC6bIIdCer4yuRAerdIgtAZcrlG0T7/sm6atUP2 HnKharUs6sJBytmc2I0x5f6XoaNktAmieQsQYNsDiBh5C+B1n5XbBOTCiZYpPvr2RUVU tzuATb/XXvDZrX5txo7TuhMaFoknn9o8PWZipEK7v3iVUGecjOx0zC11xcs66x33SozL EqMsW2EiScyJ/5hnER73JuCiXIInD/VbP4MMcgZyQ9kH3cQEoe82/Prd6IQ9v/pnZaBe E/fSV1XKHzIyQz1Sn0GDf97ObEhBvGo6GB+TNwaCK5HEzrvuVlzhyoLhWUSXEQnZCiuv anKQ== X-Gm-Message-State: AOAM532RZcP2rz+D4AwvZH8JZY8A+bg/mUCsyd/nRtwi5ili72hbJ+/d evp0kdC+9aFzXRDONQkhn2E= X-Google-Smtp-Source: ABdhPJwxeeApg+mF6lT0TKD5wtpDZ21ECd1gynQ2ZJPAlJVfjZKQRcyrX5EMjqyTtpDoJFUdeOpRsg== X-Received: by 2002:ad4:4431:: with SMTP id e17mr634576qvt.45.1612915689205; Tue, 09 Feb 2021 16:08:09 -0800 (PST) Received: from tong-desktop.local ([2601:5c0:c200:27c6:7408:b5fb:1cd8:ad04]) by smtp.googlemail.com with ESMTPSA id 196sm265011qkn.64.2021.02.09.16.08.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Feb 2021 16:08:08 -0800 (PST) From: Tong Zhang To: Andy Lutomirski , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , linux-kernel@vger.kernel.org Cc: ztong0001@gmail.com Subject: [PATCH v1] x86/vdso: fix CE on non-compatible cflags Date: Tue, 9 Feb 2021 19:07:49 -0500 Message-Id: <20210210000749.3952313-1-ztong0001@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I am getting some compilation error on when using CONFIG_X86_32 kernel configuration arch/x86/entry/vdso/vdso32/../vclock_gettime.c:29:1: error: ‘-mindirect-branch’ and ‘-fcf-protection’ are not compatible add -fcf-protection=none when CONFIG_RETPOLINE=y Signed-off-by: Tong Zhang --- arch/x86/entry/vdso/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 02e3e42f380b..37885336b53f 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -159,6 +159,7 @@ KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING ifdef CONFIG_RETPOLINE ifneq ($(RETPOLINE_VDSO_CFLAGS),) KBUILD_CFLAGS_32 += $(RETPOLINE_VDSO_CFLAGS) + KBUILD_CFLAGS_32 += $(call cc-option,-fcf-protection=none) endif endif -- 2.25.1