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 90507C433F5 for ; Wed, 30 Mar 2022 20:06:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231907AbiC3UIg (ORCPT ); Wed, 30 Mar 2022 16:08:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231549AbiC3UIf (ORCPT ); Wed, 30 Mar 2022 16:08:35 -0400 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96D945C851 for ; Wed, 30 Mar 2022 13:06:49 -0700 (PDT) Received: by mail-pl1-x62e.google.com with SMTP id p17so21499778plo.9 for ; Wed, 30 Mar 2022 13:06:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=zz99CC/dzN0eKJq2+dN0xgIk5MEz2najshGkZSY+2K8=; b=lXcRLFGBm3OOD7++f2H7UcUVxFqk6ODsXpbDcaMGKaQ8St/MfvpJOzMDLzvE00SH5C 676TZvbAj2IlNNuVqOwIhos4c4xpaXIbhJFMeBePgRhWvYM6ITc6yaNBuxm3N0H/m7yE iNHLmTXMxYJDmGtQs0w02WKoKZXpy+BIZaEmNmyvPhwhJkmQoO3xTptFkuwdlwDhCreK k1q/OQQ5u3KATvhOHpRKPuwScqf/KdUck7jJP2CQ8L5D9gh76mIqRzp8W2mqfPNNPjGW UQUbEc2zjKyJKkx+cR5EBzolRuWCccau/qBpIUXOQPCs+unVXu77K7xa3dE6cPRsnfwm CF3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=zz99CC/dzN0eKJq2+dN0xgIk5MEz2najshGkZSY+2K8=; b=1q9A6u+T06IN0psmH4T4II4UHYYX26KlHAqkr2a/FpGDGslY8X+avRGGI+jHzdGWp4 GxvDRZrAOt9ggxWLshiCPAFbSsYYupctyD13geAUf/EQkan1/eyfYr5RtjmR7Ogl9gNL QGRlZtVhtskiDXgJLFBCa90N+aP5JA2X4CDkki+0vA+5o9JVn8apbh+NWPKEsY85VA41 DXvdab01mCp/e2gCnNAox+V9xI//JEGeaKIGjDMfbhYbXefrE65/Np62RvrkZnWw43Oh JoNqKMa4C5za7Hqbj6v1Lh9kKW9bO8laQ3vIMf+v08p5zF7oBtafp71A6gPqTTMCdZir HUSA== X-Gm-Message-State: AOAM532vEvOa9N4bP16p21wjMuFAjVCv5gcDPavydyEaff/0tZQtTjES FPIB4JbxE9/aV8meXXZZCugjNA== X-Google-Smtp-Source: ABdhPJx0p0Kvtux9zYtuaEVA2gBoIJL0FZuHW0gNsAWIw107ERi54YP0VFNxfVFEDaAFMkGYXhSJNA== X-Received: by 2002:a17:902:6841:b0:150:9b8c:3a67 with SMTP id f1-20020a170902684100b001509b8c3a67mr1072224pln.151.1648670808911; Wed, 30 Mar 2022 13:06:48 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id w4-20020a056a0014c400b004fb0c7b3813sm21188919pfu.134.2022.03.30.13.05.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Mar 2022 13:05:37 -0700 (PDT) Date: Wed, 30 Mar 2022 20:05:11 +0000 From: Sean Christopherson To: Chenyi Qiang Cc: Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Xiaoyao Li , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 1/7] KVM: VMX: Introduce PKS VMCS fields Message-ID: References: <20220221080840.7369-1-chenyi.qiang@intel.com> <20220221080840.7369-2-chenyi.qiang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220221080840.7369-2-chenyi.qiang@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Feb 21, 2022, Chenyi Qiang wrote: > PKS(Protection Keys for Supervisor Pages) is a feature that extends the > Protection Key architecture to support thread-specific permission > restrictions on supervisor pages. > > A new PKS MSR(PKRS) is defined in kernel to support PKS, which holds a > set of permissions associated with each protection domain. > > Two VMCS fields {HOST,GUEST}_IA32_PKRS are introduced in > {host,guest}-state area to store the respective values of PKRS. > > Every VM exit saves PKRS into guest-state area. > If VM_EXIT_LOAD_IA32_PKRS = 1, VM exit loads PKRS from the host-state > area. > If VM_ENTRY_LOAD_IA32_PKRS = 1, VM entry loads PKRS from the guest-state > area. > > Signed-off-by: Chenyi Qiang > Reviewed-by: Jim Mattson > --- Reviewed-by: Sean Christopherson