On 2011-10-17 13:22, Michael S. Tsirkin wrote: > On Mon, Oct 17, 2011 at 11:28:16AM +0200, Jan Kiszka wrote: >> Devices models are usually not interested in specifying MSI-X >> configuration details beyond the number of vectors to provide and the >> BAR number to use. Layout of an exclusively used BAR and its >> registration can also be handled centrally. >> >> This is the purpose of msix_init_simple. It provides handy services to >> the existing users. Future users like device assignment may require more >> detailed setup specification. For them we will (re-)introduce msix_init >> with the full list of configuration option (in contrast to the current >> code). >> >> Signed-off-by: Jan Kiszka <jan.kis...@siemens.com> > > Well, this seems a bit of a code churn then, doesn't it? > We are also discussing using memory BAR for virtio-pci for other > stuff besides MSI-X, so the last user of the _simple variant > will be ivshmem then?
We will surely see more MSI-X users over the time. Not sure if they all mix their MSIX-X BARs with other stuff. But e.g. the e1000 variant I have here does not. So there should be users in the future. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
