From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=44692 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PrTqX-0000cY-T2 for qemu-devel@nongnu.org; Mon, 21 Feb 2011 06:22:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PrTqW-0007h3-Oa for qemu-devel@nongnu.org; Mon, 21 Feb 2011 06:22:29 -0500 Received: from mx1.redhat.com ([209.132.183.28]:10682) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PrTqW-0007gw-FT for qemu-devel@nongnu.org; Mon, 21 Feb 2011 06:22:28 -0500 Date: Mon, 21 Feb 2011 13:22:17 +0200 From: "Michael S. Tsirkin" Message-ID: <20110221112217.GB4450@redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: [Qemu-devel] Re: Vhost support List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Liu Yu-B13201 Cc: Yoder Stuart-B08248 , "qemu-devel@nongnu.org" On Mon, Feb 21, 2011 at 11:13:33AM +0000, Liu Yu-B13201 wrote: > > Hello everyone, > > Does anyone know the status of vhost in upstream qemu? > We would like to try vhost with kvm on powerpc e500v2 platform, > but obviously, powerpc kvm only works with upstream qemu. > > KVM wike page says it needs to enable CONFIG_PCI_MSI for guest kernel. > Is MSI a necessary? > > Thanks, > Yu At the moment, yes. The issue is not with vhost, it's that irqfd in kvm only works with MSI at the moment. -- MST