From owner-svn-src-stable@FreeBSD.ORG Fri May 20 22:45:48 2011 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from [127.0.0.1] (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by hub.freebsd.org (Postfix) with ESMTP id 9B5F6106564A; Fri, 20 May 2011 22:45:47 +0000 (UTC) (envelope-from jkim@FreeBSD.org) From: Jung-uk Kim To: Kostik Belousov Date: Fri, 20 May 2011 18:45:35 -0400 User-Agent: KMail/1.6.2 References: <201105202222.p4KMMuqT003163@svn.freebsd.org> <20110520223048.GI48734@deviant.kiev.zoral.com.ua> In-Reply-To: <20110520223048.GI48734@deviant.kiev.zoral.com.ua> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201105201845.37305.jkim@FreeBSD.org> Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-8@freebsd.org Subject: Re: svn commit: r222150 - in stable/8/sys: amd64/amd64 amd64/include i386/i386 i386/include X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 May 2011 22:45:48 -0000 On Friday 20 May 2011 06:30 pm, Kostik Belousov wrote: > On Fri, May 20, 2011 at 10:22:56PM +0000, Jung-uk Kim wrote: > > Author: jkim > > Date: Fri May 20 22:22:56 2011 > > New Revision: 222150 > > URL: http://svn.freebsd.org/changeset/base/222150 > > > > Log: > > MFC: r221188 > > > > Define "Hypervisor Present" bit. This bit is used by several > > hypervisors to identify CPUs running under emulation. > > In the latest revision of the Software Developer's Manual, Intel > stated that bit 31 is always 0 for the real CPUs. So it is as much > official as it can be. OTOH, AMD's "CPUID Specification" says "Reserved for use by hypervisor to indicate guest status". :-) Jung-uk Kim