> >> It would require a mechanism to do enumeration and identification > >> though. > > > > Huh? Do you want export *all* block devices via extboot? Will IDE > > drives show up twice then? > > No, because SeaBIOS already has an ATA driver so we wouldn't want to > expose IDE on the extboot bus.
"SeaBIOS already has an ATA driver" doesn't seem a convincing argument for making IDE special, because I expect the BIOS will grow support for other block devices. > > I would export only one and export it only on explicit user request, > > so it can be used for cases where seabios has no native support ... > > If we expose all of the disks, then the user can choose which one they > want to boot from without having to shut down qemu and modify the > command line. Either expose ever block device qemu knows about, or have extboot as a regular block device with no special handling. I strongly prefer the latter option. In fact I'd much prefer to see extboot rewritten to just virtio-block. Simple virtio clients really aren't that hard to write. Paul
