From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerd Hoffmann Subject: Re: [Qemu-devel] [PATCH 1.0] ac97: don't override the pci subsystem id Date: Mon, 07 Nov 2011 16:10:00 +0100 Message-ID: <4EB7F4C8.4080004@redhat.com> References: <1320663634-29453-1-git-send-email-kraxel@redhat.com> <4EB7E896.9010108@redhat.com> <4EB7EC4A.90607@redhat.com> <4EB7EE62.7070805@redhat.com> <4EB7EEDD.4090604@codemonkey.ws> <4EB7F027.10209@redhat.com> <4EB7F0D8.2060306@codemonkey.ws> <4EB7F285.9080009@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Anthony Liguori , Takashi Iwai , kvm@vger.kernel.org, qemu-devel@nongnu.org To: Avi Kivity Return-path: Received: from mx1.redhat.com ([209.132.183.28]:31576 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751676Ab1KGPKI (ORCPT ); Mon, 7 Nov 2011 10:10:08 -0500 In-Reply-To: <4EB7F285.9080009@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Hi, > This is more of an edge case however, since we know that hardware tools > rely on PCI IDs. The ID is invalid, you can't do anything useful with it ... > For example our hypothetical ABI signature tool will > certainly include lspci like functionality and detect this as a change. ... except maybe recording it somewhere to notice when changes. So I guess your point is Windows guests might think they got a new sound card, record that has hardware change and may require re-activation because of that? cheers, Gerd