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 E5D2BC433F5 for ; Mon, 3 Oct 2022 18:25:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230053AbiJCSZE (ORCPT ); Mon, 3 Oct 2022 14:25:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49622 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230052AbiJCSYp (ORCPT ); Mon, 3 Oct 2022 14:24:45 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C0E5C6B for ; Mon, 3 Oct 2022 11:24:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664821475; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=P57fOCRr8L8IWMz1idkV10HcfpUZXl9CrILykX0M7Do=; b=NdM6BOSZHnPZh7QU1Ys5UnWDmcl7fk7sBp9lmQ9fkSLPcliMP30/F5vnctbWi6WRdTbbX2 Uu8iCJOzP/exgxgJDk0cCLq235QLu2b27NuhBWs7oCLJxJge8coAOsU8HuUxhvJwJ30M+0 igsBM7P3c8zqkij22Lcx73idwq+0PU4= Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-290-mdvslV0qOMWUc5rVUUQSgQ-1; Mon, 03 Oct 2022 14:24:35 -0400 X-MC-Unique: mdvslV0qOMWUc5rVUUQSgQ-1 Received: by mail-qk1-f198.google.com with SMTP id n13-20020a05620a294d00b006cf933c40feso9828416qkp.20 for ; Mon, 03 Oct 2022 11:24:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=P57fOCRr8L8IWMz1idkV10HcfpUZXl9CrILykX0M7Do=; b=6sylt+7HnXeppWaL4IDzV87/qPaR6GoOIDpnnVwWy4+FJ/JxjFL9EkBB0ZD3z/gjyZ 3mWQtuI8HjTEYsytcPfqukOdRFHauhxdYePWZ+Sr6S0HqzcfdnQOhbXPbxCHCuZ8JzCq DlCccH4pPnJUf3iiKUbe2ML5xE7o6I1IfNE5S205+2Zelsm7UXwP69gZWDxDhfRI094h SzKIqHkVEErMnkuf2xe+yRK8DzA4H5ji+C/7V0C32aKjWRrzb4p92NgRSywLWY4wxcsF Ku4xPqjYNddedaenqxJ2cykW5Y9lhu6qYk3FmTxsnC6+U+YXi1gC4spLOhb1Tn2+/r6j v6cw== X-Gm-Message-State: ACrzQf1u2rNmKfXMBbxzSxkyafsJc9qBymCrxqPzpwHf4Na8vRJpwx+f 8vk5Im8ggKmUsk5KbkOp2yGcIYbT7tX38c6hsN9idT0hbZCCNarRWjtL7BMaR3ySZW2jYgcLrH6 tF2SbqkMkhOmTOsimBv3Y7ucO X-Received: by 2002:a05:6214:5609:b0:4ac:aa5e:5425 with SMTP id mg9-20020a056214560900b004acaa5e5425mr17021809qvb.81.1664821474557; Mon, 03 Oct 2022 11:24:34 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4Af9yw7ubrxehHYf5SG+wnB1n3fA8M/KRQPPpTdYDWvwqKkVBNCpZxbdY+JnLWNQEAjxNlsw== X-Received: by 2002:a05:6214:5609:b0:4ac:aa5e:5425 with SMTP id mg9-20020a056214560900b004acaa5e5425mr17021775qvb.81.1664821474349; Mon, 03 Oct 2022 11:24:34 -0700 (PDT) Received: from x1n (bras-base-aurron9127w-grc-46-70-31-27-79.dsl.bell.ca. [70.31.27.79]) by smtp.gmail.com with ESMTPSA id g12-20020ac8580c000000b0035d4f68232esm10631028qtg.3.2022.10.03.11.24.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Oct 2022 11:24:33 -0700 (PDT) Date: Mon, 3 Oct 2022 14:24:31 -0400 From: Peter Xu To: Rick Edgecombe Cc: x86@kernel.org, "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H . J . Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V . Shankar" , Weijiang Yang , "Kirill A . Shutemov" , joao.moreira@intel.com, John Allen , kcc@google.com, eranian@google.com, rppt@kernel.org, jamorris@linux.microsoft.com, dethoma@microsoft.com, Yu-cheng Yu Subject: Re: [PATCH v2 13/39] mm: Move VM_UFFD_MINOR_BIT from 37 to 38 Message-ID: References: <20220929222936.14584-1-rick.p.edgecombe@intel.com> <20220929222936.14584-14-rick.p.edgecombe@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220929222936.14584-14-rick.p.edgecombe@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 29, 2022 at 03:29:10PM -0700, Rick Edgecombe wrote: > From: Yu-cheng Yu > > To introduce VM_SHADOW_STACK as VM_HIGH_ARCH_BIT (37), and make all > VM_HIGH_ARCH_BITs stay together, move VM_UFFD_MINOR_BIT from 37 to 38. > > Signed-off-by: Yu-cheng Yu > Reviewed-by: Axel Rasmussen > Signed-off-by: Rick Edgecombe > Cc: Peter Xu > Cc: Mike Kravetz Acked-by: Peter Xu -- Peter Xu