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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BF00C433F5 for ; Tue, 15 Feb 2022 23:19:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244796AbiBOXTP (ORCPT ); Tue, 15 Feb 2022 18:19:15 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:36068 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244789AbiBOXTO (ORCPT ); Tue, 15 Feb 2022 18:19:14 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63522F8B9A for ; Tue, 15 Feb 2022 15:19:03 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id D016ECE2150 for ; Tue, 15 Feb 2022 23:19:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B41ABC340F1; Tue, 15 Feb 2022 23:18:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644967140; bh=eWOdfshPGhIlQe48cFCz8Z9EjmRibukkf+zjupjxwcA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Fo78gjumYQGjuGrujkcwmENjo+6sxhf9KmzRCcOZhqL1y0mxs8Aonxcv8zS8xXqCX CyfrJ6EvyeZ+AVzu6wJ2hLqcHgEWn6W+4XexJlndv+YE8m/4nRa0KskN7rBI+8u0j0 +QLaw7stb6ETWu9beHOTLuSLAf3C6hMwxJxHvVbLgVRT+fcVoXhRrVQ5Cma7+l8yOJ xJw74Np7vD/Dv/R5c662E86lV/W4xrKMBv6XusLHLBCkXSc57QGelzGTmbwyZLs1b+ aOoyvM/72hNAesgwH/LaEVYgAubD51vSInpQnLo5hGtS6e32XW9M33DP91k1MoPSPf spC4FKe4pVQTw== From: Will Deacon To: david@redhat.com, akpm@linux-foundation.org, Jianyong Wu , anshuman.khandual@arm.com, ardb@kernel.org, catalin.marinas@arm.com Cc: kernel-team@android.com, Will Deacon , nd@arm.com, justin.he@arm.com, gshan@redhat.com, quic_qiancai@quicinc.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] [PATCH v4] arm64/mm: avoid fixmap race condition when create pud mapping Date: Tue, 15 Feb 2022 23:18:30 +0000 Message-Id: <164493953489.1197740.9545575140952933000.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220201114400.56885-1-jianyong.wu@arm.com> References: <20220201114400.56885-1-jianyong.wu@arm.com> 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 On Tue, 1 Feb 2022 19:44:00 +0800, Jianyong Wu wrote: > The 'fixmap' is a global resource and is used recursively by > create pud mapping(), leading to a potential race condition in the > presence of a concurrent call to alloc_init_pud(): > > kernel_init thread virtio-mem workqueue thread > ================== =========================== > > [...] Applied to arm64 (for-next/mm), thanks! [1/1] arm64/mm: avoid fixmap race condition when create pud mapping https://git.kernel.org/arm64/c/ee017ee35350 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev