From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Philippe Brucker Subject: Re: [PATCH v6 0/7] Add virtio-iommu driver Date: Tue, 11 Dec 2018 19:07:41 +0000 Message-ID: References: <20181211182104.18241-1-jean-philippe.brucker@arm.com> <20181211183101.GA31936@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: In-Reply-To: <20181211183101.GA31936@infradead.org> Content-Language: en-US To: Christoph Hellwig Cc: mark.rutland@arm.com, virtio-dev@lists.oasis-open.org, kevin.tian@intel.com, tnowicki@caviumnetworks.com, devicetree@vger.kernel.org, marc.zyngier@arm.com, linux-pci@vger.kernel.org, mst@redhat.com, will.deacon@arm.com, frowand.list@gmail.com, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, robh+dt@kernel.org, kvmarm@lists.cs.columbia.edu, bhelgaas@google.com, robin.murphy@arm.com, jasowang@redhat.com List-Id: iommu@lists.linux-foundation.org On 11/12/2018 18:31, Christoph Hellwig wrote: > On Tue, Dec 11, 2018 at 06:20:57PM +0000, Jean-Philippe Brucker wrote: >> Implement the virtio-iommu driver, following specification v0.9 [1]. >> >> Only minor changes since v5 [2]. I fixed issues reported by Michael and >> added tags from Eric and Bharat. Thanks! >> >> You can find Linux driver and kvmtool device on v0.9 branches [3], >> module and x86 support on virtio-iommu/devel. Also tested with Eric's >> QEMU device [4]. > > Just curious, what is the use case for it? The main use case is assigning a device to guest userspace, using VFIO both in the host and in the guest (the most cited example being DPDK). There are others, and I wrote a little more about them last week: https://www.spinics.net/lists/linux-pci/msg78529.html Thanks, Jean