From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [RFC/PATCH 15/15] guest: virtio device support, and kvm hypercalls Date: Fri, 21 Mar 2008 12:44:27 +0200 Message-ID: <47E3918B.2040101@qumranet.com> References: <1206028710.6690.21.camel@cotte.boeblingen.de.ibm.com> <1206030328.6690.66.camel@cotte.boeblingen.de.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1206030328.6690.66.camel@cotte.boeblingen.de.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Carsten Otte Cc: aliguori@us.ibm.com, EHRHARDT@de.ibm.com, arnd@arndb.de, hollisb@us.ibm.com, kvm-devel@lists.sourceforge.net, heiko.carstens@de.ibm.com, jeroney@us.ibm.com, virtualization@lists.linux-foundation.org, borntraeger@de.ibm.com, schwidefsky@de.ibm.com, rvdheij@gmail.com, os@de.ibm.com, jblunck@suse.de, "Zhang, Xiantao" List-Id: virtualization@lists.linuxfoundation.org Carsten Otte wrote: > Currently we dont have PCI on s390. Making virtio_pci usable for s390 seems > more complicated that providing an own stub. This virtio stub is similar to > the lguest one, the memory for the descriptors and the device detection is made > via additional mapped memory on top of the guest storage. We use an external > interrupt with extint code 1237 for host->guest notification. > So, sanity won in the end. -- Any sufficiently difficult bug is indistinguishable from a feature.