From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH] VFIO driver: Non-privileged user level PCI drivers Date: Sun, 06 Jun 2010 16:44:07 +0300 Message-ID: <4C0BA627.5010005@redhat.com> References: <20100531171007.GA6516@redhat.com> <4C04C085.1030107@redhat.com> <20100601095532.GA9178@redhat.com> <4C04E0E0.3070006@redhat.com> <20100601104651.GA9415@redhat.com> <4C050013.2020701@redhat.com> <20100602094527.GD964@8bytes.org> <4C062928.8040003@redhat.com> <20100602100404.GF964@8bytes.org> <4C063ECB.8010706@redhat.com> <20100602165321.GU8301@sequoia.sous-sol.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Joerg Roedel , "Michael S. Tsirkin" , Tom Lyon , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, hjk@linutronix.de, gregkh@suse.de, aafabbri@cisco.com, scofeldm@cisco.com To: Chris Wright Return-path: In-Reply-To: <20100602165321.GU8301@sequoia.sous-sol.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 06/02/2010 07:53 PM, Chris Wright wrote: > * Avi Kivity (avi@redhat.com) wrote: > >> The interface would only work for clients which support it: kvm, >> vhost, and iommu/devices with restartable dma. >> > BTW, there is no such thing as restartable dma. There is a provision in > new specs (read: no real hardware) that allows a device to request pages > before using them. So it's akin to demand paging, but the demand is an > explicit request rather than a page fault. > Thanks for the correction. -- error compiling committee.c: too many arguments to function