From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH v5 2/3] virtio_pci: Use the DMA API for virtqueues when possible Date: Tue, 30 Sep 2014 17:53:37 +0200 Message-ID: <542AD201.7080808@redhat.com> References: <6c31406005160303a7ee291a933c267f8e55fa85.1410931077.git.luto@amacapital.net> <1410955351.30672.27.camel@pasglop> <20140917141639.GA13684@redhat.com> <1412023777.4285.93.camel@pasglop> <20140930153821.GA4456@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140930153821.GA4456@redhat.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 List-Archive: List-Post: To: "Michael S. Tsirkin" , Andy Lutomirski Cc: "linux-s390@vger.kernel.org" , Konrad Rzeszutek Wilk , Benjamin Herrenschmidt , Linux Virtualization , Christian Borntraeger , "linux390@de.ibm.com" List-ID: Il 30/09/2014 17:38, Michael S. Tsirkin ha scritto: > I think that is true but it seems that this will be true for x86 for > QEMU 2.2 unless we make some changes there. > Which we might not have the time for since 2.2 is feature frozen > from tomorrow. > Maybe we should disable the IOMMU in 2.2, this is worth considering. It is disabled by default, no? And only supported by Q35 which does not yet have migration compatibility (though we are versioning it, not sure why that is the case). Paolo