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 4C34BC433FE for ; Fri, 8 Apr 2022 04:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234452AbiDHFAt (ORCPT ); Fri, 8 Apr 2022 01:00:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234381AbiDHFAr (ORCPT ); Fri, 8 Apr 2022 01:00:47 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76B3D19B0AA; Thu, 7 Apr 2022 21:58:45 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id u14so7639245pjj.0; Thu, 07 Apr 2022 21:58:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=557MEUsdgfignjvRd8r34LD9N122H/h+3LidKwdYmBA=; b=HW45i83cuEQXFGe71cN/hhwByTx2d5PFACsT885jfnkY5ycCLdj61hdPN/mZxjfRhX U6IH95qSFJSlicUFlP8cE282fh7HJor13fLWMEyk8/YJzOYIvLAf8f5yrcxC8yE2mlrC eihE+mfkaIvgshlA7KMZNGPnenloP6ESl0OIs5vUQbeejE5ju4GMiuI8i4ILKb4E+Fvc DPU8De1fRupDMxZi9HuD6Nm7QXVMmTxTeZj0I3XjcN/uy35ZAdsMEtF2a7yChshiYcaT +vNWAAoemkT9rezDZNbJ4qistlkVEcAYNsguxTbEK2C/unXyRwrsTrw5zUui8RdRCmpD sGuA== 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=557MEUsdgfignjvRd8r34LD9N122H/h+3LidKwdYmBA=; b=p0s8F0ramWMt46XxH/gNekrf2j8tURXWCDvnSdesPgRouflx7Aex/UkNsoA/j95ObJ zXoDWXdcq4zmiO0n5BKKh1FhuZmaZXwcDm+tnLWyZCYxAvC8jvKvkYTqlMInGWyFT9wH 4vV7TaZ+gLC1C63fWwm1jBN4IRgnpWF4+U3lsbRH7ykAJ2m5y/sISKPn1Gtrma5ueRNA rtKoxV2dSCvV5te6cj/Gx6R1I0LRybh3RrSj+/ag4D+CIzlwQCk+AZH633oKbogdKo+9 V2JB5eF4RhZgDtjC7xzcbWagdRE4hXSQitUnTMp+v9/0G8EX1nA322SsUMAN7vImLwMh 7M0g== X-Gm-Message-State: AOAM533PgXvfQILYL7XSq7jGnGG6SQ/2D0IELkQ3HkLqJ+rBjkyxnWkz M64Gd6ZD9He8/dxepxaJa5M= X-Google-Smtp-Source: ABdhPJw2t3RRubpgAoE825RBRDhRO/uaG7jCherKev5XCUCNyJpBzJDEdmF0VGfF2e1QyWJWiWrBRA== X-Received: by 2002:a17:90b:1bc9:b0:1c7:228a:95ce with SMTP id oa9-20020a17090b1bc900b001c7228a95cemr19668855pjb.3.1649393924829; Thu, 07 Apr 2022 21:58:44 -0700 (PDT) Received: from localhost ([192.55.54.52]) by smtp.gmail.com with ESMTPSA id r8-20020a17090a0ac800b001c9e35d3a3asm10468887pje.24.2022.04.07.21.58.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Apr 2022 21:58:44 -0700 (PDT) Date: Thu, 7 Apr 2022 21:58:42 -0700 From: Isaku Yamahata To: Paolo Bonzini Cc: Sean Christopherson , isaku.yamahata@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, isaku.yamahata@gmail.com, Jim Mattson , erdemaktas@google.com, Connor Kuehl Subject: Re: [RFC PATCH v5 092/104] KVM: TDX: Handle TDX PV HLT hypercall Message-ID: <20220408045842.GI2864606@ls.amr.corp.intel.com> References: <6da55adb2ddb6f287ebd46aad02cfaaac2088415.1646422845.git.isaku.yamahata@intel.com> <282d4cd1-d1f7-663c-a965-af587f77ee5a@redhat.com> <8e0280ab-c7aa-5d01-a36f-93d0d0d79e25@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <8e0280ab-c7aa-5d01-a36f-93d0d0d79e25@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 07, 2022 at 05:56:05PM +0200, Paolo Bonzini wrote: > You didn't answer the other question, which is "Where is R12 documented for > TDG.VP.VMCALL?" though... Should I be worried? :) It's publicly documented. Guest-Host-Communication Interface(GHCI) spec, 344426-003US Feburary 2022. 3.8 TDG.VP.VMCALL R12 Interrupt Blocked Flag. The TD is expected to clear this flag iff RFLAGS.IF == 1 or the TDCALL instruction (that invoked TDG.VP.TDVMCALL(Instruction.HLT)) immediately follows an STI instruction, otherwise this flag should be set. -- Isaku Yamahata