From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH RFC 00/11] qemu: towards virtio-1 host support Date: Wed, 22 Oct 2014 11:44:38 +0300 Message-ID: <20141022084438.GA8051@redhat.com> References: <1412692807-12398-1-git-send-email-cornelia.huck@de.ibm.com> <54349246.6000905@amacapital.net> <20141008110428.6fc78115.cornelia.huck@de.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20141008110428.6fc78115.cornelia.huck@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: Cornelia Huck Cc: thuth@linux.vnet.ibm.com, kvm@vger.kernel.org, Benjamin Herrenschmidt , qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, jan.kiszka@siemens.com, Andy Lutomirski List-Id: virtualization@lists.linuxfoundation.org On Wed, Oct 08, 2014 at 11:04:28AM +0200, Cornelia Huck wrote: > On Tue, 07 Oct 2014 18:24:22 -0700 > Andy Lutomirski wrote: > > > On 10/07/2014 07:39 AM, Cornelia Huck wrote: > > > This patchset aims to get us some way to implement virtio-1 compliant > > > and transitional devices in qemu. Branch available at > > > > > > git://github.com/cohuck/qemu virtio-1 > > > > > > I've mainly focused on: > > > - endianness handling > > > - extended feature bits > > > - virtio-ccw new/changed commands > > > > At the risk of some distraction, would it be worth thinking about a > > solution to the IOMMU bypassing mess as part of this? > > I think that is a whole different issue. virtio-1 is basically done - we > just need to implement it - while the IOMMU/DMA stuff certainly needs > more discussion. Therefore, I'd like to defer to the other discussion > thread here. I agree, let's do a separate thread for this. I also think it's up to the hypervisors at this point. People talked about using ACPI to report IOMMU bypass to guest. If that happens, we don't need a feature bit. > _______________________________________________ > Virtualization mailing list > Virtualization@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/virtualization