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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 9310CC35E01 for ; Tue, 25 Feb 2020 15:18:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 62C6E20658 for ; Tue, 25 Feb 2020 15:18:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="YVOC0V3B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731010AbgBYPSS (ORCPT ); Tue, 25 Feb 2020 10:18:18 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:57681 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729817AbgBYPSR (ORCPT ); Tue, 25 Feb 2020 10:18:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582643896; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=A3UhdeKT+krjNlC+LM3bZB+rdh00isF5DS1fbUlbjE0=; b=YVOC0V3B483AQKOb8o4zuvHfoE7c5mrEhS+hKUEYDGlVN+XchFOGZUfmEdk0Le6kZbaecT u3C+svwmEqUHXyVwN7lVuEjEw3F5hdUMRPqF4DhxHYH/Hk+eK5K76lGjd5GIwvOe8Ko/dX btdjX3Rwi3bphnuC6n/lNT7kUX1jgGU= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-125-B1HJkvyWNsCqbgLdAfjg_A-1; Tue, 25 Feb 2020 10:18:15 -0500 X-MC-Unique: B1HJkvyWNsCqbgLdAfjg_A-1 Received: by mail-wm1-f70.google.com with SMTP id 7so1150063wmf.9 for ; Tue, 25 Feb 2020 07:18:15 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=A3UhdeKT+krjNlC+LM3bZB+rdh00isF5DS1fbUlbjE0=; b=GKNQMw23UFL/6FnEfQXJtSyNKfK4VeO43AmJZz6PmHyqlIQL9to8TgEXU5GwI77PoT 7tk0ud0okObxJ7GT+heTHqUWmDXSh9wbU1lhttwZzpCq07Gwh/qFa9tq/mwSiVRKqX6n TLWjCIJEQH+b/UyqNz0Y34xrULnYVMhzEEjF0VXavw7QHMgn6BPkS7kHFFgaOx5WUji4 P4XkTdUblUp2oPnzVQLh6Fsmd0dNzUHeu3E0pHYCwl7w9Xwzf4Gu3Z87xpsQSFFMYgFX FGBPbUnmtbS7/s0kCfYuGQy0dPHw8pa5BEDfcdV0L8d3SIMzO1YmbmQZ7PKjUW9j73dS R63Q== X-Gm-Message-State: APjAAAVDPnsY6UvmTyAH1PnOI8xcacCXyAqKMGQu2rWBCy5Zk1xJxsDk d8kBz/YhM1Wxo+DQ6bSkpLSOkR8imcbCJo8Jt64xZfZ+YuhTh3q9eQ8KSjk02BUqs+N0lkgUZhP PGwgzs1jhXwQTzMUAV7AkWmgL X-Received: by 2002:a1c:a382:: with SMTP id m124mr5758512wme.90.1582643894057; Tue, 25 Feb 2020 07:18:14 -0800 (PST) X-Google-Smtp-Source: APXvYqxQ4GB2bbPWgq4zi3drCuNanKtM0d7Lh04HjmIfnH07Op+Coz/HCusYRfj4lHibPbvl/9iiKg== X-Received: by 2002:a1c:a382:: with SMTP id m124mr5758499wme.90.1582643893839; Tue, 25 Feb 2020 07:18:13 -0800 (PST) Received: from ?IPv6:2001:b07:6468:f312:3577:1cfe:d98a:5fb6? ([2001:b07:6468:f312:3577:1cfe:d98a:5fb6]) by smtp.gmail.com with ESMTPSA id a198sm4577277wme.12.2020.02.25.07.18.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 25 Feb 2020 07:18:13 -0800 (PST) Subject: Re: [PATCH 48/61] KVM: x86: Do host CPUID at load time to mask KVM cpu caps To: Sean Christopherson Cc: Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200201185218.24473-1-sean.j.christopherson@intel.com> <20200201185218.24473-49-sean.j.christopherson@intel.com> From: Paolo Bonzini Message-ID: Date: Tue, 25 Feb 2020 16:18:12 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200201185218.24473-49-sean.j.christopherson@intel.com> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/02/20 19:52, Sean Christopherson wrote: > +#ifdef CONFIG_KVM_CPUID_AUDIT > + /* Entry needs to be fully populated when auditing is enabled. */ > + entry.function = cpuid.function; > + entry.index = cpuid.index; > +#endif This shows that the audit case is prone to bitrot, which is good reason to enable it by default. Paolo