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=-5.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 A124CC1975A for ; Mon, 23 Mar 2020 03:25:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4FCEF20724 for ; Mon, 23 Mar 2020 03:25:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="t9jCrMcP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4FCEF20724 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D73468E0003; Sun, 22 Mar 2020 23:25:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D238D6B0006; Sun, 22 Mar 2020 23:25:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C117B8E0003; Sun, 22 Mar 2020 23:25:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id A88C36B0005 for ; Sun, 22 Mar 2020 23:25:20 -0400 (EDT) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id C8393181AC9CB for ; Mon, 23 Mar 2020 03:25:20 +0000 (UTC) X-FDA: 76625186400.04.iron85_85f3d85431358 X-HE-Tag: iron85_85f3d85431358 X-Filterd-Recvd-Size: 7390 Received: from mail-pl1-f194.google.com (mail-pl1-f194.google.com [209.85.214.194]) by imf22.hostedemail.com (Postfix) with ESMTP for ; Mon, 23 Mar 2020 03:25:20 +0000 (UTC) Received: by mail-pl1-f194.google.com with SMTP id r3so5302433pls.13 for ; Sun, 22 Mar 2020 20:25:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language; bh=W5/HuYT04J9xFWoRJUWPWZDvQ+RTTmITj2K9cIZHjQ4=; b=t9jCrMcP9XGXrPYPNO++uUbfhAJMTloAyKe15C/EaCXF/NZH/TG7805BGWiIUC42Xa 5rqLpaZzEetvDbYwNcKx4dH2combp4m9Hog6K98lQ7Y+MlzyJBZR0swKz43Wkqyyug6b gXTUoYtzlhNZRzt1up3vQzsTpiB451iNb9QIuf6l1a+0xnF68rjgz6GA3W4Vbjs+NxYP S658Yc1152OlnQH6qv2JQr712YjBHBHe9RksbdA2qAHpKV5HHvHd5hsUNguGXmy9u3X0 +b22BQKBNiwKmiZsFmRP9qH5lu8VGfCT3INyQzkHl65a/G9kB21rGLkucC1p8c9bnxr4 vJGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=W5/HuYT04J9xFWoRJUWPWZDvQ+RTTmITj2K9cIZHjQ4=; b=G8n1h05j18tKNwLycagIDQM+eb9AaOPvSumrMlkTlRhkDBvfRY8CJtqiTQKEFMaCG/ SHEHN5LRZSL1vV9lMDzLEjvCpK7d1kVmO8MCjLdsof8QnLGg2e+ONKsnLb177P5tTzXy xRF+isxbhK0+sTb38VlGD1FwkNwQwv5mhX2SMSz+jJaCIC/jxwHO+o5IzlZvEpTG1dGh jq5KcG2RuNM5MsH6H0kdbQR7FXMXmVm+pxshLPHp8kvxCk8b/RBbGUyI7Qwwm0oZgN0e V4eHMYciP6ccNTKW/VtxJYgDkv1K2nUwwd23ujs/v3Nk+isCHyLwNJzmZSztSGpp7gwT LgZA== X-Gm-Message-State: ANhLgQ1BShoIQVk/BCMsjjOsqFY1/b9G0RMoPHoMtapgVCUNMqq11eTa Kj6SUpYZwEHBGIflq4FZTT4= X-Google-Smtp-Source: ADFU+vv+t1y1eZtIdN4AS3n0B0YgIv/VoMQqKWwNCo04haNIMmZpjP+ejWolBdMAsm2JjzWUtggzvA== X-Received: by 2002:a17:902:d203:: with SMTP id t3mr1208056ply.291.1584933918770; Sun, 22 Mar 2020 20:25:18 -0700 (PDT) Received: from u2f459ca2e0dd5b.ant.amazon.com ([54.240.193.1]) by smtp.gmail.com with ESMTPSA id y142sm12279390pfc.53.2020.03.22.20.25.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 22 Mar 2020 20:25:17 -0700 (PDT) Subject: Re: [PATCH] x86/memory: Drop pud_mknotpresent() To: Anshuman Khandual , linux-mm@kvack.org Cc: jhubbard@nvidia.com, Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Dave Hansen , "Kirill A . Shutemov" , Dan Williams , Andrew Morton , x86@kernel.org, linux-kernel@vger.kernel.org References: <1584925542-13034-1-git-send-email-anshuman.khandual@arm.com> From: Balbir Singh X-Pep-Version: 2.0 Message-ID: <26021221-7fde-b90a-e55f-d32288443f4e@gmail.com> Date: Mon, 23 Mar 2020 14:25:10 +1100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <1584925542-13034-1-git-send-email-anshuman.khandual@arm.com> Content-Type: multipart/mixed; boundary="------------A7775597DCC6BCF249AE7A67" Content-Language: en-US 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 is a multi-part message in MIME format. --------------A7775597DCC6BCF249AE7A67 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 23/3/20 12:05 pm, Anshuman Khandual wrote: > There is an inconsistency between PMD and PUD based THP page table help= ers > like the following, as pud_present() does not test for _PAGE_PSE. >=20 > pmd_present(pmd_mknotpresent(pmd)) : True > pud_present(pud_mknotpresent(pud)) : False >=20 > This drops pud_mknotpresent() as there are no current users. If/when ne= eded > back later, pud_present() will also have to fixed to accommodate _PAGE_= PSE. >=20 > Cc: Thomas Gleixner > Cc: Ingo Molnar > Cc: Borislav Petkov > Cc: "H. Peter Anvin" > Cc: Dave Hansen > Cc: Kirill A. Shutemov > Cc: Dan Williams > Cc: Andrew Morton > Cc: x86@kernel.org > Cc: linux-mm@kvack.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Anshuman Khandual > --- Makes sense Acked-by: Balbir Singh --------------A7775597DCC6BCF249AE7A67 Content-Type: application/pgp-keys; name="pEpkey.asc" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="pEpkey.asc" -----BEGIN PGP PUBLIC KEY BLOCK----- mQGNBF54BwIBDADwzy4QmOIiCHQkP9F7Gii+AiOiLcFpWeY0dRaGZeDRACh0t6QX 3Dm2p3ZSTxNdbUzBXE2SWRASPQOnrtzwsOjqqpfGYIbYBJcULo2A6LrVVlvhFl1o zGTDPiX6phctkPGftJrzpd57RQkIeJ6hca/QcE+RHYMKYLuyJcEgLoXpwKHUW/8l 4dPc33WgqqL5VpvUMEshXGGuTeY3aMk0Qp+ldPXRKQGGMC8XrkYNsFpjH8S0eIC9 DVwO1NJiUwQCkwrSEFGL82mzaz/TRQcJDLADW63ol17js8JVLnqL+jEDlrASRtRy kSWFsV/9FgKkRgvNqttDSuoNIqQ7QK2CmViwntNYOMzjUbEIfXuy1TrTvbocuvdn gm/BWeYlPtjiHJ5z9v7/FjW5skUE/cwSpnbJ2EOCVXX3AJXf3WJUjn1ByjLrSbTZ 0gTzI8zDYqHfP7IWOb3yB8yLOU222fWjrlmqO2cqotey5Ni4gMeb/k3sIi4P/uWV GyJeCeaFfBDzwAMAEQEAAbQkQmFsYmlyIFNpbmdoIDxic2luZ2hhcm9yYUBnbWFp bC5jb20+iQHUBBMBCAA+FiEEvy85yRdoJPGMDzxeqcBJVkwQB2UFAl54BwUCGwMF CQHhM4AFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQqcBJVkwQB2Vf4Av/bH4d 87hDsko87XaU2icVt0ixarLC7vItrGGYxyPneWsqG8aCA9Yph9pDxEsDxYoUK4IX vCky6kf/yFA4ItwUWHqxtEN2JQDi9Zx12mLNe9poZiTGM3bEwHf0x7kZWzrfIQdF /QkhcLO/CT8L+iU3VPEd7VNDCu8fUpgz1JcpXx8M+5xKho4YOIpmyPvw94E0KDow 5kR/9luJ0/s63StfOYjAn/SYlfEyzsZbi3Z5Mv/U5h4/BLAcHZtTapxZ8bkUmArh LwlTIdRVme5QlIcp6sU954BD7vUljTFz+vI0CtAzOUvIFelggFJ+1yZmgMj7WEUM jGrcCZPMV3gX7fq8Nxrk5rZFz9L/6RSBwABux9UFplFm8YnqP9kFV6Oua1Ykabk0 ELOf33eIlpnLd21xGcN9HiWPBNagzQCwpqDhaA2J61csLno9jX9itEfofJItj7tT /aB9pN/TWL4b0Qzk937yzHIsJetw7ng1QBVdvStxseubQjwrP9dOz0VHqvunuQGN BF54BwQBDADDblFfzmfOoJb0Z6z+H2k+OGpYVZekQVIAG62SHKGtwoUkS7eYq5fU 6IME8svnzYYeYdQMozHwLiVb1MXF2SkYBHEXqsC9oqfhgKroeRj+ZrUqTecCTXMa 59S3x6ygPcX3TO6J6ehzzC2EsfcLpNphXaW2l3PVGhlIoFCOdum4RNmXqEleaEHu NqpmdVHrRcBaMwhceXe0WGyULtwORQ8EFct3yeBWA0i5np0/iPjZfCKQ6RsPwOzr 5MXFcln2Ne8f/4BNvDA6HBtutbmYcl1bFz6HDi2Uk2hYY2QzVP4QrjZvNZwBoQqe iHdwtDPJeTbOVfQ2ln/zWPDLjTdNcDuG9dcrEg5iTQr5vSxzPJE95FjnaAkMPECc eWehC0ir2mVtIyCZIXY4S0IZYfTkodsLl4VoRzl82VF+9zZMrz7j5TUggUN4ow/R wdlUkAKQzD7MbTie4PmXsj/79hdoxA4kAS63aHXMrdlUSt0XvLB9HeCwPKuLHEOH 89guPW+QVfkAEQEAAYkBvAQYAQgAJhYhBL8vOckXaCTxjA88XqnASVZMEAdlBQJe eAcEAhsMBQkB4TOAAAoJEKnASVZMEAdlu38MAKyMxP/kgW3D8sKQHrxtmLX0RiQC LKQuAFKmp3Z20GXVeiOKDCqLin8klvEcLIJ4OrLj4JT/v00NzHs4i+V0ZV575DqI oQIZwGIQvK0K0kIYCBCizHW2EeVdSngJKS45hnT3TmADPeoFUlAebGkmqgBoyDsG KSapxIO6SPXFSDBnGV9GeT5aHXBMCnA5PXhTLxPIf+7b5GSExmuPfFy2OrNmsIti tMyyydzpGdG9fvi9biC/taEA/GbjBOPgVgB3qO4NzHnyQcYFsnTNaoOntERAYH37 BcWO7EG0+Xx2xAisLp7IOmNYzEBs9CTIcIypuwc1mGlznS173D5YFhezEBjn5jP8 zFasuXiQWYTPRAZBrCxGogTz1UApbU7vbBVnOsBThVdPb5YJY4R6kELyTA8NQp+/ 5H36SZXZTFIPXIBn6p/DcfnlsnLKiscNewYpoxRwNl1kuUUNtvpQpQGMiyiUhy5T t8N27HWBKnTTl49X+mpkeUQQK0cbMQZEIqlVuA=3D=3D =3DDEoJ -----END PGP PUBLIC KEY BLOCK----- --------------A7775597DCC6BCF249AE7A67--