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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C90A1C32772 for ; Tue, 23 Aug 2022 10:27:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354433AbiHWK1x (ORCPT ); Tue, 23 Aug 2022 06:27:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353952AbiHWKMU (ORCPT ); Tue, 23 Aug 2022 06:12:20 -0400 Received: from mail-yw1-x1132.google.com (mail-yw1-x1132.google.com [IPv6:2607:f8b0:4864:20::1132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D937B2B19E for ; Tue, 23 Aug 2022 01:58:43 -0700 (PDT) Received: by mail-yw1-x1132.google.com with SMTP id 00721157ae682-3321c2a8d4cso361813287b3.5 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=4zEx1QITKbaScel3Hs4HYYrUuycMjL8WeV35wNStBd3ZmOe3qLhGKPgeybwE6fW3Fs 6ZzKddE/graS2gY6Rdn+P6RqBzDDXcoUGtISwGi65amp7JxN3lPf6JVqYAkyoucEHWmM 5yVDkh6eQzKTn68uV1VvtiB2M0NivTIalSf2BoYhe9sRfcr9pyJzd7HB9IO6JYAnRLYr vAaP58ERJivusbn+P5WrT8Y7suzDKzG7T4paJSyoXW3Q1sRnkiD7AwVznyOIQVR/KwN7 nXxlbTuy4Fc1xOBRQTfZgJnBv/hiJvwWYBwOljWjOZf7LZDFmyRfuCCBJ8Fpwm2MIbnU ob5A== X-Gm-Message-State: ACgBeo36x8vdqBGZ4+/xVMxSVcT/QdGkIv1+GKieGf7p4o0oOrr/sEMP nWjPKFC+8TIh6oClUYg5sMlPpZHGgbcTMkxiWDepnA== 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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