From patchwork Mon Jun 15 13:15:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 11604943 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 18F09912 for ; Mon, 15 Jun 2020 13:15:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E69DB2071A for ; Mon, 15 Jun 2020 13:15:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WMhWjgBG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E69DB2071A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=ck4aI9ucU5ky7rkLt7Z8LGP8n65t0rhm480QLWb9w9o=; b=WMh WjgBGQh78msNffVMK6PxJ1rjepqcBQM1Ej9YXnPqUiElry2m3P3RKDTpVVdTv7pA+MFpMchy3AqqV wGpoAHa5zAq0xL9OjIQ0Y4qsUxzmbMmO5JibWfnOu+StPtZLrLxfY2okEraY5ffW3C+ZTjU4EBvFe oPEomUoMUqVwvBJ5kD1H7EUvBj6M6KG0j3Q/ditnYMa8va+9So4JBVezFeTESdQIII/JXzO9LGF7o dqI083FDQjziy6MiM+pOBaCZ5tsuPa/e8YJXHA1SOfgJlEaqbpKTkvzmVvKFIBzFZcHxB3gKDYhZD OqVDPz+WcVcCW/A1yRKKV2bfFBcS5QQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jkoxc-0002Oe-1s; Mon, 15 Jun 2020 13:15:36 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jkoxX-0002O0-Rx for linux-arm-kernel@lists.infradead.org; Mon, 15 Jun 2020 13:15:33 +0000 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 8E09B31B; Mon, 15 Jun 2020 06:15:30 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.79.186]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F22E73F6CF; Mon, 15 Jun 2020 06:15:26 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org Subject: [RFC V2 0/2] arm64/mm: Enable THP migration Date: Mon, 15 Jun 2020 18:45:16 +0530 Message-Id: <1592226918-26378-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200615_061531_949616_F5031EBB X-CRM114-Status: UNSURE ( 8.10 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, Anshuman Khandual , catalin.marinas@arm.com, Suzuki Poulose , linux-kernel@vger.kernel.org, ziy@nvidia.com, Marc Zyngier , will@kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This series enables THP migration on arm64 via ARCH_ENABLE_THP_MIGRATION. But first this modifies all existing THP helpers like pmd_present() and pmd_trans_huge() etc per expected generic memory semantics as concluded from a previous discussion here. https://lkml.org/lkml/2018/10/9/220 This series is based on v5.8-rc1. Changes in RFC V2: - Used PMD_TABLE_BIT to represent splitting PMD state per Catalin Changes in RFC V1: (https://patchwork.kernel.org/project/linux-mm/list/?series=138797) Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Rutland Cc: Marc Zyngier Cc: Suzuki Poulose Cc: Zi Yan Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Anshuman Khandual (2): arm64/mm: Change THP helpers per generic memory semantics arm64/mm: Enable THP migration arch/arm64/Kconfig | 4 ++ arch/arm64/include/asm/pgtable.h | 102 +++++++++++++++++++++++++++---- arch/arm64/mm/hugetlbpage.c | 2 +- arch/arm64/mm/mmu.c | 20 ++++++ 4 files changed, 116 insertions(+), 12 deletions(-)