From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 54471] nVMX: TRUE* MSRs unnecessary
Date: Mon, 25 Feb 2013 14:29:08 +0000 (UTC)
Message-ID: <20130225142908.9858411FC93@bugzilla.kernel.org>
References: <bug-54471-28872@https.bugzilla.kernel.org/>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
To: kvm@vger.kernel.org
Return-path: <kvm-owner@vger.kernel.org>
Received: from mail.kernel.org ([198.145.19.201]:37436 "EHLO mail.kernel.org"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1759873Ab3BYO3K (ORCPT <rfc822;kvm@vger.kernel.org>);
	Mon, 25 Feb 2013 09:29:10 -0500
Received: from mail.kernel.org (localhost [127.0.0.1])
	by mail.kernel.org (Postfix) with ESMTP id 91224202D8
	for <kvm@vger.kernel.org>; Mon, 25 Feb 2013 14:29:09 +0000 (UTC)
Received: from bugzilla.kernel.org (bugzilla.kernel.org [198.145.19.217])
	by mail.kernel.org (Postfix) with ESMTP id A23972023A
	for <kvm@vger.kernel.org>; Mon, 25 Feb 2013 14:29:08 +0000 (UTC)
In-Reply-To: <bug-54471-28872@https.bugzilla.kernel.org/>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

https://bugzilla.kernel.org/show_bug.cgi?id=54471





--- Comment #1 from Anonymous Emailer <anonymous@kernel-bugs.osdl.org>  2013-02-25 14:29:08 ---
Reply-To: jan.kiszka@siemens.com

On 2013-02-25 15:04, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=54471
> 
>            Summary: nVMX: TRUE* MSRs unnecessary
>            Product: Virtualization
>            Version: unspecified
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: enhancement
>           Priority: P1
>          Component: kvm
>         AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
>         ReportedBy: nyh@math.technion.ac.il
>         Regression: No
> 
> 
> According to the spec, the TRUE* MSRs are only necessary if bit 55 of VMX_BASIC
> is on. Since we don't set this bit, we don't need to provide these MSRs...
> So probably we shouldn't.

I tend to say we should (i.e. set bit 55) as there is the risk that
buggy guests could needlessly get confused when we expose very recent
features (like EPT) and do not provide such "old-fashioned" stuff.

Jan

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.