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=-11.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PULL_REQUEST,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 A5ADCC433DF for ; Sun, 28 Jun 2020 14:42:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8859B20720 for ; Sun, 28 Jun 2020 14:42:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726543AbgF1Oin (ORCPT ); Sun, 28 Jun 2020 10:38:43 -0400 Received: from mx2.suse.de ([195.135.220.15]:38080 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726426AbgF1Oin (ORCPT ); Sun, 28 Jun 2020 10:38:43 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 01529ACBD; Sun, 28 Jun 2020 14:38:42 +0000 (UTC) Date: Sun, 28 Jun 2020 16:38:35 +0200 From: Borislav Petkov To: Linus Torvalds Cc: Peter Zijlstra , "Paul E. McKenney" , x86-ml , lkml Subject: [GIT PULL] rcu/urgent for 5.8-rc3 Message-ID: <20200628143835.GC18884@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Linus, please pull two urgent RCU, KCSAN-related fixes. Thx. --- The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407: Linux 5.8-rc1 (2020-06-14 12:45:04 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/rcu_urgent_for_5.8_rc3 for you to fetch changes up to b58e733fd774f3f4b49d9e7640d172a57e35200e: rcu: Fixup noinstr warnings (2020-06-25 08:24:32 -0700) ---------------------------------------------------------------- Paul E. McKenney says: A single commit that uses "arch_" atomic operations to avoid the instrumentation that comes with the non-"arch_" versions. In preparation for that commit, it also has another commit that makes these "arch_" atomic operations available to generic code. Without these commits, KCSAN uses can see pointless errors. Both from Peter Zijlstra. ---------------------------------------------------------------- Peter Zijlstra (2): locking/atomics: Provide the arch_atomic_ interface to generic code rcu: Fixup noinstr warnings include/linux/atomic-fallback.h | 236 +++++++++++++++++++++++++++++++++- include/linux/compiler.h | 2 +- kernel/rcu/tree.c | 32 ++++- scripts/atomic/gen-atomic-fallback.sh | 31 +++++ 4 files changed, 292 insertions(+), 9 deletions(-) -- Regards/Gruss, Boris. SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg