Rusty Russell wrote:
Previous versions of virtio didn't commonalize probing. For every driver, every virtio implementation (KVM, lguest, etc) needed an in-kernel stub to join their bus to the probe code. To solve this, we introduce a "virtio_config" mechanism, which is simply a set of [u8 type][u8 len][...data...] fields for each device. Some convenient wrapper functions make this fairly easy for drivers to unpack their configuration data themselves. This configuration data could be PCI config space, or an unrelated bus (eg. lguest) or manufactured by the kernel itself. It's designed to be extensible: fields get marked as the device reads them so a host supporting some future extension can tell if the guest driver understood it. This also applies to bitfields: the guest explicitly acks the bits it understands. There's also a simple status bitmask useful for low-level host analysis of what the guest is doing with the device.
Lovely. -- error compiling committee.c: too many arguments to function _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
