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=-10.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL autolearn=no 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 6940CC12002 for ; Fri, 16 Jul 2021 20:23:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 48594611F1 for ; Fri, 16 Jul 2021 20:23:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230172AbhGPU0B (ORCPT ); Fri, 16 Jul 2021 16:26:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232524AbhGPU0A (ORCPT ); Fri, 16 Jul 2021 16:26:00 -0400 Received: from mail-pg1-x536.google.com (mail-pg1-x536.google.com [IPv6:2607:f8b0:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D72CC061765 for ; Fri, 16 Jul 2021 13:23:04 -0700 (PDT) Received: by mail-pg1-x536.google.com with SMTP id w15so11028119pgk.13 for ; Fri, 16 Jul 2021 13:23:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=x85rFiYKbp37maDQJOeVsTrROe6NzpgrCb0rCmLZT5M=; b=A3iaz5afAQGHEMb5dAx2xN1+E/Jkl1exglVeIMNRgB04QPj2THSJNWjFHH4urOC4dj azzuyrfh/0lup7t52U45wwGHGx8zncavC+7HwrEL3oJwy/PeRI46jUEK0qujvYADefKM ArovxtIPS/UAgoxpNVVFKG1HXyvqmh/SOMk3r2oZmO0lj0BNXSOSYxiq86oLWGpzEqzx KFUbSDnqnzAODG1aEbYMh+kDC3D+M6SXrMy0/MM0ejw2dka6jMwj5/ZiAjC+QAPQ0dBB tZ2XeFnfbp2L4X1kFk+q9un5p8BAkl8dwzio2EB2PCFjXW8QMJqBrsIbUOddU2P4I+C3 O5Pg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=x85rFiYKbp37maDQJOeVsTrROe6NzpgrCb0rCmLZT5M=; b=YKKiSnWSrSnwLcziyuGRm0kZhSb/wyJHqLZhl81DZzzZKPYV2VXBYZlVisD+sQp7+E jMrW0yqXX0rifb2WmhqB5cqG9QdMxC6+sMkKA7qPZpEcH16v+gWtJpBLE6ICLWONxfbq q5IhJ5jvG9FsgyAADINWW0I41wQFflPYj0d+x5vReQmoUKONkD4VUx65fTCbglynjV47 YKirf6QRSuLCvCiPCPbdxm/zuvKTo4G1Va83xmVRj3NYTrvDmTo5EIQMVZsTDSEBf7bC kTodLpQRTwYh4t0Hm99Ebd0hHUlZYvkUO7pzH18EUad+OYpntcD5eQY20YT38hAFNOX9 7SEg== X-Gm-Message-State: AOAM531rLgFYsq6J1dt1UwGJZ6N7NAABwfJGRjtdcQlkCZlwFj+Ukbpx YPnynpdGQEDj6vCypJDn2XkQpw== X-Google-Smtp-Source: ABdhPJxWNEVP2UwoOT65EqEX3Q4hJT3FKuvSXbD5nsfxrItaCDkJFf10AIQZc6tNG7uEGWx3oLscpg== X-Received: by 2002:a63:1e59:: with SMTP id p25mr11432905pgm.110.1626466983659; Fri, 16 Jul 2021 13:23:03 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id o134sm11534516pfg.62.2021.07.16.13.23.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Jul 2021 13:23:03 -0700 (PDT) Date: Fri, 16 Jul 2021 20:22:59 +0000 From: Sean Christopherson To: Brijesh Singh Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, Thomas Gleixner , Ingo Molnar , Joerg Roedel , Tom Lendacky , "H. Peter Anvin" , Ard Biesheuvel , Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Andy Lutomirski , Dave Hansen , Sergio Lopez , Peter Gonda , Peter Zijlstra , Srinivas Pandruvada , David Rientjes , Dov Murik , Tobin Feldman-Fitzthum , Borislav Petkov , Michael Roth , Vlastimil Babka , tony.luck@intel.com, npmccallum@redhat.com, brijesh.ksingh@gmail.com Subject: Re: [PATCH Part2 RFC v4 30/40] KVM: X86: Define new RMP check related #NPF error bits Message-ID: References: <20210707183616.5620-1-brijesh.singh@amd.com> <20210707183616.5620-31-brijesh.singh@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210707183616.5620-31-brijesh.singh@amd.com> Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Nit, please use "KVM: x86:" for the shortlogs. And ubernit, the "new" part is redundant and/or misleading, e.g. implies that more error code bits are being added to existing SNP/RMP checks. E.g. KVM: x86: Define RMP page fault error code bits for #NPT On Wed, Jul 07, 2021, Brijesh Singh wrote: > When SEV-SNP is enabled globally, the hardware places restrictions on all > memory accesses based on the RMP entry, whether the hyperviso or a VM, Another typo. > performs the accesses. When hardware encounters an RMP access violation > during a guest access, it will cause a #VMEXIT(NPF).