Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757971Ab2EANY2 (ORCPT ); Tue, 1 May 2012 09:24:28 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:35113 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756669Ab2EANY1 (ORCPT ); Tue, 1 May 2012 09:24:27 -0400 Date: Tue, 1 May 2012 22:24:21 +0900 From: Takuya Yoshikawa To: "Michael S. Tsirkin" Cc: Avi Kivity , Marcelo Tosatti , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, davej@redhat.com Subject: Re: [PATCH] kvm: update eax documentation in signature cpuid Message-Id: <20120501222421.d35390564b5fd4d7fbcba76f@gmail.com> In-Reply-To: <20120501130611.GA8357@redhat.com> References: <20120501130611.GA8357@redhat.com> X-Mailer: Sylpheed 3.2.0beta3 (GTK+ 2.24.6; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 748 Lines: 19 On Tue, 1 May 2012 16:06:11 +0300 "Michael S. Tsirkin" wrote: > Note that this value in ebx, ecx and edx corresponds to the string "KVMKVMKVM". > +The value in eax corresponds to the maximim cpuid function present in this leaf, maximum? Takuya > +and will be updated if more functions are added in the future. > +Note also that old hosts set eax value to 0x0. This should > +be interpreted as if the value was 0x40000001. > This function queries the presence of KVM cpuid leafs. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/