From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Borntraeger Subject: Re: Freeze with KVM_CLOCK, undocumented dependency VIRTIO_BLK -> VIRTIO_PCI Date: Fri, 4 Jul 2008 11:27:04 +0200 Message-ID: <200807041127.04434.borntraeger@de.ibm.com> References: <485DBBCD.5060600@codemonkey.ws> <485EDEB8.3050109@birkenwald.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: Anthony Liguori , kvm@vger.kernel.org To: Bernhard Schmidt Return-path: Received: from mtagate5.uk.ibm.com ([195.212.29.138]:39596 "EHLO mtagate5.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752647AbYGDJ10 (ORCPT ); Fri, 4 Jul 2008 05:27:26 -0400 Received: from d06nrmr1407.portsmouth.uk.ibm.com (d06nrmr1407.portsmouth.uk.ibm.com [9.149.38.185]) by mtagate5.uk.ibm.com (8.13.8/8.13.8) with ESMTP id m649RIpY540960 for ; Fri, 4 Jul 2008 09:27:18 GMT Received: from d06av04.portsmouth.uk.ibm.com (d06av04.portsmouth.uk.ibm.com [9.149.37.216]) by d06nrmr1407.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m649RHuv1913060 for ; Fri, 4 Jul 2008 10:27:18 +0100 Received: from d06av04.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av04.portsmouth.uk.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m649RAkN023733 for ; Fri, 4 Jul 2008 10:27:12 +0100 In-Reply-To: <485EDEB8.3050109@birkenwald.de> Content-Disposition: inline Sender: kvm-owner@vger.kernel.org List-ID: Am Montag, 23. Juni 2008 schrieb Bernhard Schmidt: > I don't quite understand. VIRTIO_BLK can be selected in the kernel > without selecting VIRTIO_PCI, it does not generate any build error but > the virtual blockdevice simply does appear. Does VIRTIO_BLK have any use > without VIRTIO_PCI? Yes, it does. virtio_pci is just one of currently 3 virtio transports. drivers/lguest/lguest_devices.c (CONFIG_LGUEST_GUEST) and drivers/s390/kvm/kvm_virtio.c are other transports that make virtio_blk usable. Christian