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=-16.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL 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 87672C433DF for ; Thu, 18 Jun 2020 09:32:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F3C321974 for ; Thu, 18 Jun 2020 09:32:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Lrw5CS3S" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729184AbgFRJcB (ORCPT ); Thu, 18 Jun 2020 05:32:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728943AbgFRJcA (ORCPT ); Thu, 18 Jun 2020 05:32:00 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFC72C06174E for ; Thu, 18 Jun 2020 02:31:58 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id o140so5735452yba.16 for ; Thu, 18 Jun 2020 02:31:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=L6v3WNe9vB4gYfOBJzsidmJB3J+19cEKm9MUweYc46U=; b=Lrw5CS3SLvONDKoeW6LlNlz6st2JCT6q3diuLRr/xxJ7vfuPZxfICzFgK9pJKhMgQV Pzcu/M/pXb/St8kvLH4IP+SKI2RZRbuVehv79IifS2C3NKtlWycbBw6iB9nAG4EdVxep D1Ucxn1UTG4SRnbNCPiFrObnnhR8sjKm3K579epxPkB3vuUSimWegkn3RY1fo8zTPyy/ U4SDhAlAP8ydgSbZ5ZGHH1vHTmz124P8HVOi41KwcHYi1dfA4kWn8ri1JgHdVAKuAn+I Jf+dogYy6Ht0l/w7HDwfVLJG1oYbcVLomsGlse+Uf2sLdZz/AH47cb9V3zxWpDtTT+D9 mQfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=L6v3WNe9vB4gYfOBJzsidmJB3J+19cEKm9MUweYc46U=; b=Uir8HV2fBZRnsHO64bd+eMAzCnFcw6YYKcXMVEhBhB1PsIBuFEK5xbGlohbkZ6Q79g jTVjXmvJTjFVXSgnTo5zbrOc8XVMMTFS1p4Ym2R5p79yGtdmsgUqJqgpEZ9WcMmQNWpL qraotO0z23Uy7I3sTZB8DfJezyZ7B3ZAV4dv84Srgvwfe99xIXaumF2ViNcUf/1oFXDq lOb4HKz043Ygq7nCsW632iAns8NLXXX9Pc5MHBSk4uty5nenMk688t0BS1n4JkPYLGe9 djKIN13npIrrpBPo/yWEIPoNaGyYJXswdEanqoPLoW07mZG2texP518NZtXSAzEMmGUD orxQ== X-Gm-Message-State: AOAM5319e+EPELPmQIin3G/R25P1jF3+r2lOHW8emCAQzRUQYI34pGQJ cJSvjkxqr3rts5QVQ3ZdE/fNOq3ZrA== X-Google-Smtp-Source: ABdhPJy6LDnuo+sOzAf9LZhHavkVDrLCPvyyqa0mnCoDJix+rgoqjk/DI5NTTZig88w6szDnUq5mkXK+Tg== X-Received: by 2002:a25:84cc:: with SMTP id x12mr4787589ybm.454.1592472718011; Thu, 18 Jun 2020 02:31:58 -0700 (PDT) Date: Thu, 18 Jun 2020 11:31:15 +0200 Message-Id: <20200618093118.247375-1-elver@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.27.0.290.gba653c62da-goog Subject: [PATCH 0/3] kcsan: Re-add GCC support, and compiler flags improvements From: Marco Elver To: elver@google.com, paulmck@kernel.org Cc: will@kernel.org, peterz@infradead.org, bp@alien8.de, tglx@linutronix.de, mingo@kernel.org, dvyukov@google.com, cai@lca.pw, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Re-add GCC as a supported compiler and clean up compiler flags. To use KCSAN with GCC before GCC 11 is released, the following will get a stable GCC 10 and cherry-pick the patches required for KCSAN support: git clone git://gcc.gnu.org/git/gcc.git && cd gcc git checkout -b gcc-10-for-kcsan releases/gcc-10.1.0 git cherry-pick \ 4089df8ef4a63126b0774c39b6638845244c20d2 \ ab2789ec507a94f1a75a6534bca51c7b39037ce0 \ 06712fc68dc9843d9af7c7ac10047f49d305ad76 ./configure --prefix --enable-languages=c,c++ make -j$(nproc) && make install Marco Elver (3): kcsan: Re-add GCC as a supported compiler kcsan: Simplify compiler flags kcsan: Disable branch tracing in core runtime Documentation/dev-tools/kcsan.rst | 3 ++- kernel/kcsan/Makefile | 4 ++-- lib/Kconfig.kcsan | 3 ++- scripts/Makefile.kcsan | 2 +- 4 files changed, 7 insertions(+), 5 deletions(-) -- 2.27.0.290.gba653c62da-goog