From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: [PATCH v4 0/4] virtio: Clean up scatterlists and use the DMA API Date: Fri, 05 Sep 2014 15:20:51 +1000 Message-ID: <1409894451.4246.116.camel@pasglop> References: <1409609814.30640.11.camel@pasglop> <1409691213.30640.37.camel@pasglop> <874mwpkxxi.fsf@rustcorp.com.au> <87lhpykdbu.fsf@rustcorp.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: 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 List-Archive: List-Post: To: Andy Lutomirski Cc: virtio-dev@lists.oasis-open.org, Konrad Rzeszutek Wilk , "Michael S. Tsirkin" , "linux-s390@vger.kernel.org" , Linux Virtualization , Christian Borntraeger , "linux390@de.ibm.com" , Paolo Bonzini List-ID: On Thu, 2014-09-04 at 19:57 -0700, Andy Lutomirski wrote: > There's a third option: try to make virtio-mmio work everywhere > (except s390), at least in the long run. This other benefits: it > makes minimal hypervisors simpler, I think it'll get rid of the limits > on the number of virtio devices in a system. ARM is already going > this direction, and I imagine that PPC support would be > straightforward (it's already using devicetree). PCI has advantages though. Management stacks know about PCI and nothing else really. We already have all the infra to do hotplug with PCI, etc... > Does virtio-mmio have any reasonable way of doing hotplug? It could > also eventually make sense to have a standard for virtio on virtio. That would be very platform specific. Cheers, Ben.