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=-18.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL autolearn=unavailable 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 D1338C432BE for ; Wed, 18 Aug 2021 21:07:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B4923610A3 for ; Wed, 18 Aug 2021 21:07:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233897AbhHRVIC (ORCPT ); Wed, 18 Aug 2021 17:08:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229965AbhHRVH6 (ORCPT ); Wed, 18 Aug 2021 17:07:58 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EE69C061764 for ; Wed, 18 Aug 2021 14:07:23 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id 18so3459653pfh.9 for ; Wed, 18 Aug 2021 14:07:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=wwOBCn06TMZp9/KiQNhcPCCoJYBDD2eVjvlRxAvYXb4=; b=FHcs1Em0hv3sy2oL9DRDduqIWHymNzWWGDKUh1cGcBpzbwOAgQ2qV+pCau8hiiLRog ThoUyrgJMBA8bC5BP2v2Lu7MKhhJW3tNa5J2i6OTqExsFKf7jEekYrXlGi82ZeYih3mU 247c1eSFpDfFvs2hzHvF5owMPlvNNsopEXIz3w9kVz2o8c/zp3bhiuANwvAKTy1SjKbc Ji9oRIzoraO6THCTblL6xWiAvrvRpwvZ3lJShrVcEkzkA7xnJ21FHoPQkRhU87nkqHQC u1Dp1ggIcZUgKErF4/AtcHNBxhQLaPVORGDAuJd9j52MZJ3OJcKBW+7O7U77YKgaI0uz /8Dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=wwOBCn06TMZp9/KiQNhcPCCoJYBDD2eVjvlRxAvYXb4=; b=F8+oymdjMO31yKb0Gjp3isiWG6L+rMWQO3jiwuMAqXBleWcPRsWfwAHYX97h8C+o9Z aZ5Sxwm2A3/UOG+9hTrkI1RiRnp8q5OWLiQDgoX/unJLown6wn8Lkuu8rrkhepxdXG72 etRGP5NSfUPh/S2HDJYY+rH2LqSYmn8eYf7Bw3xvZ6OIGYwVQo4QV/nG7qx/lq+3Mqvo uK29sUyRoOANJisPXk9JeqV1GdfHxig+qC2GZQy4w4moknQWLdUV6Lbfs8ajjV1A6WL2 qDRMRBo62rvZK9MgCvk+6rd/b/zQUWPwY2kZZEAUAmWGfPD5MQVYhes8SMTDP/L6RJfD /4fg== X-Gm-Message-State: AOAM530rYPHulomegZ+LQsb+PZfCYHwi3KxQ5Bz2b05PDfLp3o02wTeM HIF/CIHrZVJIQrPXOk3GnZ9heBTJO/Fx10SJfiKu4Q== X-Google-Smtp-Source: ABdhPJwQbo1qSO1Kt2SFCjnh3NIe4RjXa4w0iy58aJZ1cKvE55oAi7V3ty3Wx1h1jK7kzqd/XOYiU/phs+5SpGbInag= X-Received: by 2002:a63:ce57:: with SMTP id r23mr10716345pgi.271.1629320842594; Wed, 18 Aug 2021 14:07:22 -0700 (PDT) MIME-Version: 1.0 References: <1297c0dd3f1bb47a6d089f850b629c7aa0247040.1629257115.git.houwenlong93@linux.alibaba.com> In-Reply-To: <1297c0dd3f1bb47a6d089f850b629c7aa0247040.1629257115.git.houwenlong93@linux.alibaba.com> From: Jim Mattson Date: Wed, 18 Aug 2021 14:07:11 -0700 Message-ID: Subject: Re: [PATCH] kvm: fix wrong exception emulation in check_rdtsc To: Hou Wenlong Cc: kvm@vger.kernel.org, Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Joerg Roedel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Avi Kivity , linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 17, 2021 at 8:36 PM Hou Wenlong wrote: > > According to Intel's SDM Vol2 and AMD's APM Vol3, when > CR4.TSD is set, use rdtsc/rdtscp instruction above privilege > level 0 should trigger a #GP. > > Fixes: d7eb82030699e ("KVM: SVM: Add intercept checks for remaining group7 instructions") > Signed-off-by: Hou Wenlong Reviewed-by: Jim Mattson