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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4B7F3C433F5 for ; Fri, 18 Mar 2022 14:35:13 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BA5688D0002; Fri, 18 Mar 2022 10:35:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B55BB8D0001; Fri, 18 Mar 2022 10:35:12 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9F63D8D0002; Fri, 18 Mar 2022 10:35:12 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.27]) by kanga.kvack.org (Postfix) with ESMTP id 9034F8D0001 for ; Fri, 18 Mar 2022 10:35:12 -0400 (EDT) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 5CD9960D51 for ; Fri, 18 Mar 2022 14:35:12 +0000 (UTC) X-FDA: 79257754464.10.A876896 Received: from mail-qt1-f178.google.com (mail-qt1-f178.google.com [209.85.160.178]) by imf22.hostedemail.com (Postfix) with ESMTP id CEF9DC0030 for ; Fri, 18 Mar 2022 14:35:11 +0000 (UTC) Received: by mail-qt1-f178.google.com with SMTP id d15so5845314qty.8 for ; Fri, 18 Mar 2022 07:35:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=V7P4GZK3e6fyTq1pakb6Rzu6ZJgSaONaWTDE6DcGFrE=; b=Z8bs2DWUWGLhWdOjyWlnn9HNRwNSjCyVUcQwAOiEKwFsEEBGPZoaf84h5nMF6qt5zR 7kb0mvD3zpe4gHTDcRv2+uUbN05ibi1sBC9y1YzAtE2cvQZ/kpD1DCjsBJlPwgXRJGxm DnBROXIz5vhznVTym7m9zNChFlxun94xZI1j6sOEMN9AUFGd5JVe8mBYpCyvu7uEpCpc fFCUPZjO4cPBKgqXGFY7pW7CVObso2wbO9F7yS5IPtSINUkqlDFHj6H/IxVTFzzFqyI8 bnCxb4XelWAKG8/zXQElVRTxW2/5b8bwZPkqUpuEbFfH4286/0fiRHe+p0lJ70yg0Ta9 L2Yw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=V7P4GZK3e6fyTq1pakb6Rzu6ZJgSaONaWTDE6DcGFrE=; b=jFmn8QRMpWrhLME+lnMUjn8ZlcEWpdM1dCFg1/3RnRqlD7X1o3MgvYkbmIOmIovIRc zuN293sT0axdAIcf8Ch+VVx0XuE+jA8A02w8+wAHhpUylfmmgrPNZBbjweFsvxGkqLC4 D3ETjaeF2QOfwN4WHHuzQhv/6G1DiUY9TNfiqL1OmTWX9p/DeN6rsLPhK/n6blUp8tKp 3w1H6TxFhJhIeC0kLp0zf7nTm7UBx8hmuKF9fPsA2nYQ18aKPvg/ITTypmNUlYgRu7fp s8mXiQXFkdZ8msbFNHLmLvits7hdlXs8goxxCuSt3XKPBRsCa45rGKV8Pxde8rSmeVCh CDLQ== X-Gm-Message-State: AOAM5305hxsLiGCr1zu9s+b1U1yALzMcwk1VzAuFdp34ULtb15Jv7bsc W/xY8uwPmGU9FZzeuffT/MXON0EaT9W7MHvzSld/sQ== X-Google-Smtp-Source: ABdhPJwf+MEW47SH6CFA80X1s0ccNAZNyAoYqKtZ7oSbtZn2ydv7N6dD6IDjj6RCMmalJ+GCbbbNLtvE1RbOEg+mDqk= X-Received: by 2002:a05:622a:15c5:b0:2e1:cdc9:dd1c with SMTP id d5-20020a05622a15c500b002e1cdc9dd1cmr7596184qty.79.1647614110831; Fri, 18 Mar 2022 07:35:10 -0700 (PDT) MIME-Version: 1.0 References: <20211214162050.660953-1-glider@google.com> <20211214162050.660953-13-glider@google.com> In-Reply-To: From: Alexander Potapenko Date: Fri, 18 Mar 2022 15:34:34 +0100 Message-ID: Subject: Re: [PATCH 12/43] kcsan: clang: retire CONFIG_KCSAN_KCOV_BROKEN To: Mark Rutland Cc: Marco Elver , Alexander Viro , Andrew Morton , Andrey Konovalov , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Christoph Hellwig , Christoph Lameter , David Rientjes , Dmitry Vyukov , Eric Dumazet , Greg Kroah-Hartman , Herbert Xu , Ilya Leoshkevich , Ingo Molnar , Jens Axboe , Joonsoo Kim , Kees Cook , Matthew Wilcox , "Michael S. Tsirkin" , Pekka Enberg , Peter Zijlstra , Petr Mladek , Steven Rostedt , Thomas Gleixner , Vasily Gorbik , Vegard Nossum , Vlastimil Babka , Linux Memory Management List , Linux-Arch , LKML Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: CEF9DC0030 X-Stat-Signature: h3nbcz7axep8wyme7akj8a368nqfafyi Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=Z8bs2DWU; spf=pass (imf22.hostedemail.com: domain of glider@google.com designates 209.85.160.178 as permitted sender) smtp.mailfrom=glider@google.com; dmarc=pass (policy=reject) header.from=google.com X-Rspam-User: X-HE-Tag: 1647614111-230446 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Dec 15, 2021 at 3:43 PM Mark Rutland wrote: > > On Wed, Dec 15, 2021 at 02:39:43PM +0100, Marco Elver wrote: > > On Wed, 15 Dec 2021 at 14:33, Mark Rutland wrote= : > > > > > > On Tue, Dec 14, 2021 at 05:20:19PM +0100, Alexander Potapenko wrote: > > > > kcov used to be broken prior to Clang 11, but right now that versio= n is > > > > already the minimum required to build with KCSAN, that is why we do= n't > > > > need KCSAN_KCOV_BROKEN anymore. > > > > > > Just to check, how is that requirement enforced? > > > > HAVE_KCSAN_COMPILER will only be true with Clang 11 or later, due to > > no prior compiler having "-tsan-distinguish-volatile=3D1". > > I see -- could we add wording to that effect into the commit messge? Will be done. > > > I see the core Makefiles enforce 10.0.1+, but I couldn't spot an expl= icit > > > version dependency in Kconfig.kcsan. > > > > > > Otherwise, this looks good to me! > > > > I think 5.17 will be Clang 11 only, so we could actually revert > > ea91a1d45d19469001a4955583187b0d75915759: > > https://lkml.kernel.org/r/Yao86FeC2ybOobLO@archlinux-ax161 > > > > I should resend that to be added to the -kbuild tree. > > FWIW, that also works for me. > > Thanks, > Mark. --=20 Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Stra=C3=9Fe, 33 80636 M=C3=BCnchen Gesch=C3=A4ftsf=C3=BChrer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. Falls Sie diese f=C3=A4lschlicherweise erhalten haben sollten, leiten Sie diese bitte nicht an jemand anderes weiter, l=C3=B6schen Sie alle Kopien und Anh=C3=A4nge davon und lassen Sie = mich bitte wissen, dass die E-Mail an die falsche Person gesendet wurde. This e-mail is confidential. If you received this communication by mistake, please don't forward it to anyone else, please erase all copies and attachments, and please let me know that it has gone to the wrong person.