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
