From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: VT-d support for device assignment Date: Sun, 24 Aug 2008 13:01:27 +0300 Message-ID: <48B13177.9050703@qumranet.com> References: <1219389054-15332-1-git-send-email-amit.shah@qumranet.com> <200808231442.09332.amit.shah@qumranet.com> <48AFD97A.30309@qumranet.com> <200808231519.53081.amit.shah@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, muli@il.ibm.com, anthony@codemonkey.ws, jesse.barnes@intel.com, david.woodhouse@intel.com, mark.gross@intel.com, benami@il.ibm.com, weidong.han@intel.com To: Amit Shah Return-path: Received: from il.qumranet.com ([212.179.150.194]:28936 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752629AbYHXKBa (ORCPT ); Sun, 24 Aug 2008 06:01:30 -0400 In-Reply-To: <200808231519.53081.amit.shah@qumranet.com> Sender: kvm-owner@vger.kernel.org List-ID: Amit Shah wrote: >> So long as there is no potential for performance or security impact, >> having pvdma turned on automatically is better. We could still have >> dma=noparavirt to disable it. >> > > So we fail the hypercalls once the guest tries to contact us? > Yes. Also don't expose the feature bit to the guest. -- error compiling committee.c: too many arguments to function