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 A474AC433EF for ; Tue, 8 Feb 2022 08:24:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349319AbiBHIYZ (ORCPT ); Tue, 8 Feb 2022 03:24:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56934 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231538AbiBHIYT (ORCPT ); Tue, 8 Feb 2022 03:24:19 -0500 Received: from mail-io1-xd35.google.com (mail-io1-xd35.google.com [IPv6:2607:f8b0:4864:20::d35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E84A1C03FEC0 for ; Tue, 8 Feb 2022 00:24:18 -0800 (PST) Received: by mail-io1-xd35.google.com with SMTP id h7so20172902iof.3 for ; Tue, 08 Feb 2022 00:24:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=5xEJb5dGtkxnE3DtyMZwk9XL+cYr5+2XHsmtJGbNn9w=; b=EQfrfLZxUCkGh+GkX3mWS9OkZA/2OhdrueRQPYkMoFFyxvFSW2s2Il8NdOT6E+n9/O 5x4ciq9rZpVLgGZObrl9GmF2Z0MA2sloPjyTHgo+7o2CUNDxQqt3zD/4o/R9DFBUMOFY YIMD8S8bgDHl2b26431AcMAeqYJ+7fZQujWRpHC0xYgfE74KQZdY4/+rebqFBI/3YstE 0vUNNpqIRLp0Mssr4eK1bCBO+doe0IXOPB3V2GTfWyvMgI2Z+McTB/VzdXYsa/HPs5Qi JAEoHlzFaMya6tWxKtHQ5ksXavkCAunD7RQK3MNjE6AGrvICXgPgSD+J96OYRIru6PyF C3JA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=5xEJb5dGtkxnE3DtyMZwk9XL+cYr5+2XHsmtJGbNn9w=; b=JYPydGPRzSl8AMaLxlAXh6d1DsmcHqNrnvtKRTauun4oMVoAfCJVzfbLe8YbnmN8hA Kv2G2/9u/WPwPAg2WcDukyMOCbvAwcmTj5amGyJb8f7l3t/J+dwtVknG5Hn/9tX5janB xDRdakXLMKb8qvhhAzECEhEYQ3w0Z1zQSCHco4GTQ06FiJ49P/z714MAtM+Eq+6NMtj2 efc9C5lnCM66ZumtqcGTQ38LdcxeGSnUN67kBRN3Inzs7NbXfS1esTvdLa3lxCVDmuWc XtDA5MUwIjJe7pzim3MsmhMwQtG9ZXXsWhCqvey+2sC+xs2Xr9GJ7kek+hzCeyXKi0dQ MqlQ== X-Gm-Message-State: AOAM532ADjw5WIYe2SNMyGbTwkgkPZIj/vfxiGV6N3l2gHyWbfQfptTT cCIriCZVpzZud+QycsaAUc/IJw== X-Google-Smtp-Source: ABdhPJz0275GX25s4HD4rXh2vegbV0ySFaSIArfKRzAwnXPerqERRCHYLW7W1lSQppGMHug4USPTww== X-Received: by 2002:a05:6638:10c5:: with SMTP id q5mr1493113jad.113.1644308658203; Tue, 08 Feb 2022 00:24:18 -0800 (PST) Received: from google.com ([2620:15c:183:200:5f31:19c3:21f5:7300]) by smtp.gmail.com with ESMTPSA id x7sm2989090ilp.88.2022.02.08.00.24.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Feb 2022 00:24:17 -0800 (PST) Date: Tue, 8 Feb 2022 01:24:13 -0700 From: Yu Zhao To: Andrew Morton , Johannes Weiner , Mel Gorman , Michal Hocko Cc: Andi Kleen , Aneesh Kumar , Barry Song <21cnbao@gmail.com>, Catalin Marinas , Dave Hansen , Hillf Danton , Jens Axboe , Jesse Barnes , Jonathan Corbet , Linus Torvalds , Matthew Wilcox , Michael Larabel , Mike Rapoport , Rik van Riel , Vlastimil Babka , Will Deacon , Ying Huang , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, page-reclaim@google.com, x86@kernel.org, Brian Geffon , Jan Alexander Steffens , Oleksandr Natalenko , Steven Barrett , Suleiman Souhlal , Daniel Byrne , Donald Carr , Holger =?iso-8859-1?Q?Hoffst=E4tte?= , Konstantin Kharlamov , Shuang Zhai , Sofia Trinh Subject: Re: [PATCH v7 01/12] mm: x86, arm64: add arch_has_hw_pte_young() Message-ID: References: <20220208081902.3550911-1-yuzhao@google.com> <20220208081902.3550911-2-yuzhao@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220208081902.3550911-2-yuzhao@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 08, 2022 at 01:18:51AM -0700, Yu Zhao wrote: > diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h > index c4ba047a82d2..990358eca359 100644 > --- a/arch/arm64/include/asm/pgtable.h > +++ b/arch/arm64/include/asm/pgtable.h > @@ -999,23 +999,13 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, > * page after fork() + CoW for pfn mappings. We don't always have a > * hardware-managed access flag on arm64. > */ > -static inline bool arch_faults_on_old_pte(void) > -{ > - WARN_ON(preemptible()); > - > - return !cpu_has_hw_af(); > -} > -#define arch_faults_on_old_pte arch_faults_on_old_pte > +#define arch_has_hw_pte_young cpu_has_hw_af Reworked arch_has_hw_pte_young() for arm64 according to: https://lore.kernel.org/linux-mm/20220111141901.GA10338@willie-the-truck/