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[79.179.71.128]) by smtp.gmail.com with ESMTPSA id d9sm2246590wmb.30.2020.09.25.03.22.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2020 03:23:00 -0700 (PDT) Date: Fri, 25 Sep 2020 06:22:57 -0400 From: "Michael S. Tsirkin" To: Jean-Philippe Brucker Subject: Re: [PATCH v3 0/6] Add virtio-iommu built-in topology Message-ID: <20200925062230-mutt-send-email-mst@kernel.org> References: <20200821131540.2801801-1-jean-philippe@linaro.org> <20200925084806.GB490533@myrica> MIME-Version: 1.0 In-Reply-To: <20200925084806.GB490533@myrica> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Cc: virtio-dev@lists.oasis-open.org, kevin.tian@intel.com, linux-pci@vger.kernel.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, sebastien.boeuf@intel.com, bhelgaas@google.com, jasowang@redhat.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Fri, Sep 25, 2020 at 10:48:06AM +0200, Jean-Philippe Brucker wrote: > On Fri, Aug 21, 2020 at 03:15:34PM +0200, Jean-Philippe Brucker wrote: > > Add a topology description to the virtio-iommu driver and enable x86 > > platforms. > > > > Since [v2] we have made some progress on adding ACPI support for > > virtio-iommu, which is the preferred boot method on x86. It will be a > > new vendor-agnostic table describing para-virtual topologies in a > > minimal format. However some platforms don't use either ACPI or DT for > > booting (for example microvm), and will need the alternative topology > > description method proposed here. In addition, since the process to get > > a new ACPI table will take a long time, this provides a boot method even > > to ACPI-based platforms, if only temporarily for testing and > > development. > > > > v3: > > * Add patch 1 that moves virtio-iommu to a subfolder. > > * Split the rest: > > * Patch 2 adds topology-helper.c, which will be shared with the ACPI > > support. > > * Patch 4 adds definitions. > > * Patch 5 adds parser in topology.c. > > * Address other comments. > > > > Linux and QEMU patches available at: > > https://jpbrucker.net/git/linux virtio-iommu/devel > > https://jpbrucker.net/git/qemu virtio-iommu/devel > > I'm parking this work again, until we make progress on the ACPI table, or > until a platform without ACPI and DT needs it. Until then, I've pushed v4 > to my virtio-iommu/topo branch and will keep it rebased on master. > > Thanks, > Jean I think you guys need to work on virtio spec too, not too much left to do there ... -- MST _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu