From patchwork Mon Aug 17 09:19:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 11717701 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 DBE8E138C for ; Mon, 17 Aug 2020 09:20:33 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B2ED72072E for ; Mon, 17 Aug 2020 09:20:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2ED72072E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F1AB46B0007; Mon, 17 Aug 2020 05:20:32 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id ECA4E6B0008; Mon, 17 Aug 2020 05:20:32 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DB9BC6B000A; Mon, 17 Aug 2020 05:20:32 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0225.hostedemail.com [216.40.44.225]) by kanga.kvack.org (Postfix) with ESMTP id C4C136B0007 for ; Mon, 17 Aug 2020 05:20:32 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 85B84824556B for ; Mon, 17 Aug 2020 09:20:32 +0000 (UTC) X-FDA: 77159515104.15.look12_5d0bcd327015 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id 58DC31814B0C1 for ; Mon, 17 Aug 2020 09:20:32 +0000 (UTC) X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,anshuman.khandual@arm.com,,RULES_HIT:30045:30054:30064:30070,0,RBL:217.140.110.172:@arm.com:.lbl8.mailshell.net-62.18.0.100 64.10.201.10;04ygftmr57fdxfsggbtajgu73dp5zycgafrucqnj5gyyair1aujei1qhowtg1fu.3s7ztiq94gu4gqhz71sc5ay8eawufukre1smckm1r8gjeobts6i13dbn3gs5w4h.h-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: look12_5d0bcd327015 X-Filterd-Recvd-Size: 2528 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Mon, 17 Aug 2020 09:20:31 +0000 (UTC) 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 C522E31B; Mon, 17 Aug 2020 02:20:30 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.65.199]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 88B433F6CF; Mon, 17 Aug 2020 02:20:27 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com, will@kernel.org, akpm@linux-foundation.org, Anshuman Khandual , Mark Rutland , Marc Zyngier , Suzuki Poulose , Zi Yan , linux-kernel@vger.kernel.org Subject: [PATCH 0/2] arm64/mm: Enable THP migration Date: Mon, 17 Aug 2020 14:49:42 +0530 Message-Id: <1597655984-15428-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 X-Rspamd-Queue-Id: 58DC31814B0C1 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 v5.9-rc1. Changes in V1: - Used new PMD_PRESENT_INVALID (bit 59) to represent invalidated PMD state per Catalin Changes in RFC V2: (https://patchwork.kernel.org/project/linux-mm/list/?series=302965) - 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 to comply with generic MM semantics arm64/mm: Enable THP migration arch/arm64/Kconfig | 4 +++ arch/arm64/include/asm/pgtable-prot.h | 7 +++++ arch/arm64/include/asm/pgtable.h | 39 ++++++++++++++++++++++++--- 3 files changed, 47 insertions(+), 3 deletions(-)