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=ham 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 5E9C7C433B4 for ; Wed, 19 May 2021 05:40:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C9BA61355 for ; Wed, 19 May 2021 05:40:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345428AbhESFlf (ORCPT ); Wed, 19 May 2021 01:41:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345556AbhESFjS (ORCPT ); Wed, 19 May 2021 01:39:18 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7A3DC061345 for ; Tue, 18 May 2021 22:36:11 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id s4so4811531plg.12 for ; Tue, 18 May 2021 22:36:11 -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=PF0Q9frtyuRcpG5BnVwblhIE9pTcOMwFzNkIPovg6ss=; b=fPntYKFrfOpVF5bsRxvyNYfSvgwcRiEFZauBnsgNc714SkShf+0dbqLl8QmDVYhrfH kgwFCSECHlKHRwVGCGHNvDDajtJHW6W6k8EZC8hvEZvwBw1Vt3CfRqFKSdty1pmnyJcC KHODAHZ3o/KfJGHNlrUR94dVV1ocjzG8NjPuf5CgVUVe37K4DALkP+uky+FyubR0mDxq 7yudjjySKl1FF/foqnvQEba2Ra/eGdaMvVhmiAiWI9J8J2D8Gx1C0hNwm7XrAgrMX40p qN+i412QPwTL4OoOYS1g5p4JhO/9/zfIJfzb60IpMxup9jLBi649xfCzE+n9y77tfJvf MV7w== 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=PF0Q9frtyuRcpG5BnVwblhIE9pTcOMwFzNkIPovg6ss=; b=YHeqw0KcdY9CWBv714Hsr1w5PP3FG/vKFQQkHbHPZ3aMMHk3YYpjkibg8LfpjoyoOB z4fOhMiFtQT+bhftVFOKdsjGC/VUi5obPAHg/FHB9yKyiDmcdYFLC0i+zEuLYE09Lu6f ydiui1wpDk/fbWu2uKHj+6PFfroDpL+lpvlg7RZDaAbB6bUtR0oSljMPMpcY4ApsFmZx Im1qNW3tphU003M3Q8Rd92tcmsXHLj0m9uIaM1T8Yam7twLPs+aLZ9tWjT9R6JdSCgbi myK3I217LxBRZGU6C9z8dVcDnxT/MIDJIQ4u8CnBNQK2ez1GyRe+5GKtFcg84P1Yo07W G1Ng== X-Gm-Message-State: AOAM531212EYX8Pejk43Frg6AY6Swrplx3X9v/84g3H2NUshlIEI/fJU M4tTFPwwYBWJG8gM2T1SH+HzfGKcU6WTydWPUyuZCA== X-Google-Smtp-Source: ABdhPJyA79FOqU3/Od6UZdXL1PxGWbUxYoT7oxm+gXEJ1WS7h82tWs1Q0kPfOgfMXPQz7HFvZPc3NztpIBNSyIqi+Nk= X-Received: by 2002:a17:90b:1185:: with SMTP id gk5mr5791984pjb.168.1621402571226; Tue, 18 May 2021 22:36:11 -0700 (PDT) MIME-Version: 1.0 References: <20210424004645.3950558-1-seanjc@google.com> <20210424004645.3950558-34-seanjc@google.com> In-Reply-To: <20210424004645.3950558-34-seanjc@google.com> From: Reiji Watanabe Date: Tue, 18 May 2021 22:35:55 -0700 Message-ID: Subject: Re: [PATCH 33/43] KVM: VMX: Refresh list of user return MSRs after setting guest CPUID To: Sean Christopherson Cc: Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Fri, Apr 23, 2021 at 5:55 PM Sean Christopherson wrote: > > After a CPUID update, refresh the list of user return MSRs that are > loaded into hardware when running the vCPU. This is necessary to handle > the oddball case where userspace exposes X86_FEATURE_RDTSCP to the guest > after the vCPU is running. > > Fixes: 0023ef39dc35 ("kvm: vmx: Set IA32_TSC_AUX for legacy mode guests") > Fixes: 4e47c7a6d714 ("KVM: VMX: Add instruction rdtscp support for guest") > Signed-off-by: Sean Christopherson Reviewed-by: Reiji Watanabe