From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kai Huang Subject: Re: GPU Passthrough without VT-d Date: Fri, 07 Mar 2014 15:21:07 +0800 Message-ID: <53197363.2030501@linux.intel.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Dushyant Behl , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org In general you cannot do pci passthrough for HVM without IOMMU (vt-d) support, as we need VT-d to support guest physical address to machine address translation for DMA. However, theoretically, you can do it by hacking Xen to setup identical (1:1) mappings for guest's memory, but it's not a pretty way and you should expect to suffer lots of tricky corner case bugs. Thanks, -Kai On 03/07/2014 11:03 AM, Dushyant Behl wrote: > Hi all, > > I am new to the xen community and I wanted to work on the project > "Allowing guests to boot with a passed-through GPU as the primary > display" but the processor in my system does not supports IO MMU > Virtualization (Intel VT-d), it only supports the Intel Virtualization > (Intel VT-x). Would it be possible for me to work on the project in anyway? > > Thanks, > Dushyant > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel >