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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AB1CC32772 for ; Tue, 23 Aug 2022 08:58:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 131128D0001; Tue, 23 Aug 2022 04:58:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0E0896B0078; Tue, 23 Aug 2022 04:58:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EE95F8D0001; Tue, 23 Aug 2022 04:58:43 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id DF71B6B0073 for ; Tue, 23 Aug 2022 04:58:43 -0400 (EDT) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id B9DC1C14B6 for ; Tue, 23 Aug 2022 08:58:43 +0000 (UTC) X-FDA: 79830256926.20.15CE835 Received: from mail-yw1-f170.google.com (mail-yw1-f170.google.com [209.85.128.170]) by imf14.hostedemail.com (Postfix) with ESMTP id 6E158100009 for ; Tue, 23 Aug 2022 08:58:43 +0000 (UTC) Received: by mail-yw1-f170.google.com with SMTP id 00721157ae682-333a4a5d495so361352987b3.10 for ; Tue, 23 Aug 2022 01:58:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc; bh=m5qgqqFpqA6eOgQn4O8247QrJrav2qzsMmpmi/SnFuE=; b=i9OHop8RyO9zg6AiErKW2wooPRB8ZRjrAFyFzN03hcvpDNJLYZ2HwIUe8SYMfme3fT 8f1iUiI6YR2v632HdWZ1ZJF9dhjmecGB5IM9YlTP7quv65nWIZIh19aaI6DrDJfw4JLZ zEO2jZDQRfJhncwfceQWEgIGLkzGtaYVfuXWe/oALbyKO48RziMymUOpSU48uwm4sxD6 vtPzLVl2fMVXH6UdMtI8Zt1QUq3t7W7H0dcOHDymMFQ1nK08OEyo/CGGej7U6Drpg80d AkSI5iMH4vHqHIIYEOH7aAyb0/uVXZsgpSrEwyghkEr8TGR6aNxL87tLDUorqwQ4r/ux dTJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc; bh=m5qgqqFpqA6eOgQn4O8247QrJrav2qzsMmpmi/SnFuE=; b=o7gi9DBVtnIBqfMScIYbjSlAXv/X5DmSpPCHVrGrwpj9ZdptZ/TbIDx8HtyEaGaYdD 6E7ZQ2qMiU5rWlFyy0Oio+YW0IjJ15a5yxu3Eyghq1o0HrCLfbzvUPD/p8uI1JHxZrj5 ncF94VEYi5BcgIIwVO3qCSSFXb3HQKzeLYSLkDDQREujovAm/oNlXZxuTQEuxI6hT5xv EZrUc6TxxZNmiqG6p3mFRZMW/xb5I5Avf9rxcjmx7bYs2Yd7yXE6dYrsRni+AQ8lOJ56 VRGnkCqpJKpZHmDoofcqY4MlfpQJJpj7INXyqP+SPynezk4aeiJNp7kLZ0J9KvjqAEyb nkNQ== X-Gm-Message-State: ACgBeo3I0r5CV6+/jyv3G0zy13bkh6fWY0VspiAybAT9I32l+LbGWZvT W3w+Z1K7ejIquwL1CD3F45LXy22zhq8bUuU5YzgILg== X-Google-Smtp-Source: AA6agR7xmuJFAP+rGE/67ETVeD9dm4lCQyCx2YDiGRV15JuqADdedKk2xu3EcUZ4pmbLSKy6CJ9UfRlpAgdIlWb1EZA= X-Received: by 2002:a25:bc3:0:b0:673:bc78:c095 with SMTP id 186-20020a250bc3000000b00673bc78c095mr23017612ybl.376.1661245122544; Tue, 23 Aug 2022 01:58:42 -0700 (PDT) MIME-Version: 1.0 References: <20220815041803.17954-1-kirill.shutemov@linux.intel.com> In-Reply-To: From: Alexander Potapenko Date: Tue, 23 Aug 2022 10:58:06 +0200 Message-ID: Subject: Re: [PATCHv6 00/11] Linear Address Masking enabling To: Peter Zijlstra Cc: "Kirill A. Shutemov" , Dave Hansen , Andy Lutomirski , "the arch/x86 maintainers" , Kostya Serebryany , Andrey Ryabinin , Andrey Konovalov , Taras Madan , Dmitry Vyukov , "H . J . Lu" , Andi Kleen , Rick Edgecombe , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1661245123; a=rsa-sha256; cv=none; b=jD89v87PPw/8Lo/LrFrf4Xo9DVRda2fk099R9RiPQrm+DDeLtTdaUXtCFAr4WTw9aqwV9c yYmlqhNT5BnDxi4iaTTOx7ZqPxQ17ImcEyFxPyf9CSQyNCD5JnzK3SZRNN61ga5PdkC+jf HIVz/1+4lV/wnPErQs4nxCxOWFlqoeU= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=i9OHop8R; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf14.hostedemail.com: domain of glider@google.com designates 209.85.128.170 as permitted sender) smtp.mailfrom=glider@google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1661245123; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=m5qgqqFpqA6eOgQn4O8247QrJrav2qzsMmpmi/SnFuE=; b=uO6Mh4KFNCSpRekXqwqifNbWW0FYsjME0oukxhYDZNDyn+Ta9SBcN4bRFSjG3ayNErNkA+ rUNALAWdWV96BP5P5FGq22vmdE8pFqPy9HQzbzHYA32+46xaUzGz8MFTyUbaEZ2QHW+G7C wcE74u3GkP0iKVNUke1zYN+2gA6V8cc= X-Rspam-User: Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=i9OHop8R; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf14.hostedemail.com: domain of glider@google.com designates 209.85.128.170 as permitted sender) smtp.mailfrom=glider@google.com X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 6E158100009 X-Stat-Signature: mxmomdk7yqzspxbdzkjrupk8k34dpiqh X-HE-Tag: 1661245123-536898 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: On Mon, Aug 15, 2022 at 3:43 PM Peter Zijlstra wrote= : > > On Mon, Aug 15, 2022 at 07:17:52AM +0300, Kirill A. Shutemov wrote: > > > Kirill A. Shutemov (7): > > x86/mm: Fix CR3_ADDR_MASK > > x86: CPUID and CR3/CR4 flags for Linear Address Masking > > mm: Pass down mm_struct to untagged_addr() > > x86/mm: Handle LAM on context switch > > x86/uaccess: Provide untagged_addr() and remove tags before address > > check > > x86/mm: Provide arch_prctl() interface for LAM > > x86: Expose untagging mask in /proc/$PID/arch_status > > Over-all these are not terrible.. I've replied with a few nits; with > those fixed: > > Acked-by: Peter Zijlstra (Intel) The patchset is green on the LLVM buildbot: https://lab.llvm.org/buildbot/#/builders/169, so my Tested-by: tags persist. I'm going to make minor changes to HWASan runtime to accommodate for the new arch_prctl(). --=20 Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Stra=C3=9Fe, 33 80636 M=C3=BCnchen Gesch=C3=A4ftsf=C3=BChrer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg