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[27.32.36.31]) by smtp.gmail.com with ESMTPSA id i130sm1181212pgc.7.2020.11.19.18.58.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Nov 2020 18:58:05 -0800 (PST) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Cc: Nicholas Piggin , "Aneesh Kumar K.V" , Anton Vorontsov , Peter Zijlstra , Thomas Gleixner , linux-kernel@vger.kernel.org Subject: [PATCH 0/2] powerpc/64s: fix for CPU hotplug vs mm_cpumask bug Date: Fri, 20 Nov 2020 12:57:55 +1000 Message-Id: <20201120025757.325930-1-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This fixes a race in powerpc mm_cpumask code, I hope the core kernel patch looks okay and we could take it through the powerpc tree with an ack from someone (Peter or Thomas, perhaps?) Thanks, Nick Nicholas Piggin (2): kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling powerpc/64s: Trim offlined CPUs from mm_cpumasks arch/powerpc/include/asm/book3s/64/mmu.h | 12 ++++++++++++ arch/powerpc/mm/book3s64/mmu_context.c | 20 ++++++++++++++++++++ arch/powerpc/platforms/powermac/smp.c | 2 ++ arch/powerpc/platforms/powernv/smp.c | 3 +++ arch/powerpc/platforms/pseries/hotplug-cpu.c | 3 +++ kernel/cpu.c | 6 +++++- 6 files changed, 45 insertions(+), 1 deletion(-) -- 2.23.0 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=-8.5 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 B62A9C388F9 for ; Fri, 20 Nov 2020 02:59:56 +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 993CE2222F for ; Fri, 20 Nov 2020 02:59:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qwaRz9Pz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 993CE2222F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Cch9N5PCVzDqvh for ; Fri, 20 Nov 2020 13:59:52 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::543; helo=mail-pg1-x543.google.com; envelope-from=npiggin@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=qwaRz9Pz; dkim-atps=neutral Received: from mail-pg1-x543.google.com (mail-pg1-x543.google.com [IPv6:2607:f8b0:4864:20::543]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Cch7Q0PlNzDqv6 for ; Fri, 20 Nov 2020 13:58:09 +1100 (AEDT) Received: by mail-pg1-x543.google.com with SMTP id f18so6050215pgi.8 for ; Thu, 19 Nov 2020 18:58:09 -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=LEquB2e4ILjHkuvoO1HDaYbpd0GtS6EX4u7NzQ82bGM=; b=qwaRz9PzkgumlOLi6+U/YB2GvWe8NTcbyeFyYcl1tx+ZCOb8wx26LgiYUsITReXuI5 AKdC25sqEkLSn+pn+ghWdehXOkTQzQKLKN8rU+9phrz8+lyLEw5IcqeXrlXq8Un1W9mk x6rut2m2uUY2JeDfr+//mz/yfN0VEFWhr3I4oJ+F2rgfdRMMuI4+6rOWQBWk9D4O/P1G JYha8RQW+gTPv0mpu8zkUYkfHXAr28zd+HqvrKGKECEH2hvZnprIt6Ydih80X8M0+JvE nWRg4rUMzDMKqVBPHm4bl5kQDyHa8KAblvxxlj2T44hiCkSiZnezGB6VV0xdTSxIoZQA yRUA== 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=LEquB2e4ILjHkuvoO1HDaYbpd0GtS6EX4u7NzQ82bGM=; b=jo5r2cAqiqPJSKGrS16WKdQNPFytkJsnb8LY6uKdV+o56O7KkgXfastpCEB+whSFB2 FSaVRFSd3IMm+j3OIMmjH471aJTDZ1hAeWqOMh3Nzr5FGhjQKCt1Tg2EELwBKY9z4Rl1 JId7MwaQIOb8gAKck8xRKdosu6KPJZaxWcZR3FeZPrQRekrMeCBStKxjZg3IHoT1zxfV 2sWvdf4oh2FjGLF3XiD9RL9f43FsFtP8vKSwKGyFkanhfN9l9osLKor+veI4BVGh+tVU fGft+kjglTumhk1aLYwJSIpSlv9HazheHJsnm5pr2uFUSqcOQoAs/kSMOCtQQwC7WNBN S6rA== X-Gm-Message-State: AOAM530fi/8pfEe4GxrOMZ5nird2EWbjkzDMRf6qGoInpkfUNMYxscvg w+1mJegWwvT7Nqiz6kJEF63p/k+CZ5Q= X-Google-Smtp-Source: ABdhPJzV6Iqey8/uSJdBfUMohg+eIQvpY6Ifki/IcYVuYzXRJbV3GpliRlXIFEnM/YSdiNCpW4kZSw== X-Received: by 2002:a63:4956:: with SMTP id y22mr15351360pgk.266.1605841085625; Thu, 19 Nov 2020 18:58:05 -0800 (PST) Received: from bobo.ozlabs.ibm.com (27-32-36-31.tpgi.com.au. [27.32.36.31]) by smtp.gmail.com with ESMTPSA id i130sm1181212pgc.7.2020.11.19.18.58.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Nov 2020 18:58:05 -0800 (PST) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/2] powerpc/64s: fix for CPU hotplug vs mm_cpumask bug Date: Fri, 20 Nov 2020 12:57:55 +1000 Message-Id: <20201120025757.325930-1-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Peter Zijlstra , "Aneesh Kumar K.V" , linux-kernel@vger.kernel.org, Nicholas Piggin , Anton Vorontsov , Thomas Gleixner Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This fixes a race in powerpc mm_cpumask code, I hope the core kernel patch looks okay and we could take it through the powerpc tree with an ack from someone (Peter or Thomas, perhaps?) Thanks, Nick Nicholas Piggin (2): kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling powerpc/64s: Trim offlined CPUs from mm_cpumasks arch/powerpc/include/asm/book3s/64/mmu.h | 12 ++++++++++++ arch/powerpc/mm/book3s64/mmu_context.c | 20 ++++++++++++++++++++ arch/powerpc/platforms/powermac/smp.c | 2 ++ arch/powerpc/platforms/powernv/smp.c | 3 +++ arch/powerpc/platforms/pseries/hotplug-cpu.c | 3 +++ kernel/cpu.c | 6 +++++- 6 files changed, 45 insertions(+), 1 deletion(-) -- 2.23.0