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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 7F9F4C433E0 for ; Tue, 2 Feb 2021 04:12:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 50C2E64E95 for ; Tue, 2 Feb 2021 04:12:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231518AbhBBEM1 (ORCPT ); Mon, 1 Feb 2021 23:12:27 -0500 Received: from foss.arm.com ([217.140.110.172]:43220 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231439AbhBBEMY (ORCPT ); Mon, 1 Feb 2021 23:12:24 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6341A147A; Mon, 1 Feb 2021 20:11:37 -0800 (PST) Received: from p8cg001049571a15.blr.arm.com (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 73C9F3F66E; Mon, 1 Feb 2021 20:11:32 -0800 (PST) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Anshuman Khandual , Catalin Marinas , Will Deacon , Ard Biesheuvel , Mark Rutland , James Morse , Robin Murphy , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Dan Williams , David Hildenbrand , Mike Rapoport Subject: [PATCH V2 0/2] arm64/mm: Fix pfn_valid() for ZONE_DEVICE based memory Date: Tue, 2 Feb 2021 09:41:52 +0530 Message-Id: <1612239114-28428-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 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 This series fixes pfn_valid() for ZONE_DEVICE based memory and also improves its performance for normal hotplug memory. While here, it also reorganizes pfn_valid() on CONFIG_SPARSEMEM. This series is based on v5.11-rc6. Question - should pfn_section_valid() be tested both for boot and non boot memory as well ? Cc: Catalin Marinas Cc: Will Deacon Cc: Ard Biesheuvel Cc: Mark Rutland Cc: James Morse Cc: Robin Murphy Cc: Jérôme Glisse Cc: Dan Williams Cc: David Hildenbrand Cc: Mike Rapoport Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Changes in V2: - Dropped pfn_valid() bifurcation based on CONFIG_SPARSEMEM - Used PFN_PHYS() and PHYS_PFN() instead of __pfn_to_phys() and __phys_to_pfn() - Moved __pfn_to_section() inside #ifdef CONFIG_SPARSEMEM with a { } construct Changes in V1: https://lore.kernel.org/linux-mm/1611905986-20155-1-git-send-email-anshuman.khandual@arm.com/ - Test pfn_section_valid() for non boot memory Changes in RFC: https://lore.kernel.org/linux-arm-kernel/1608621144-4001-1-git-send-email-anshuman.khandual@arm.com/ Anshuman Khandual (2): arm64/mm: Fix pfn_valid() for ZONE_DEVICE based memory arm64/mm: Reorganize pfn_valid() arch/arm64/mm/init.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) -- 2.20.1