On 05/18/10 14:15, Markus Armbruster wrote:
Jan Kiszka<jan.kis...@siemens.com> writes:
Extend qbus_find_dev to allow addressing of devices without an unique id
via an optional instance number. The new formats are 'driver.instance'
and 'alias.instance'.
Signed-off-by: Jan Kiszka<jan.kis...@siemens.com>
How's the instance number defined? Should be documented.
savevm instance id, used to identify multiple instances of some device
on loadvm. By default is just incrementing (0,1,2,...) for each new
device instance I think. Drivers can also specify one. Most don't do
that. IIRC some ISA drivers use the base ioport as instance id, which
sort-of makes sense as it makes sure the id identifies the correct
device no matter what the initialization order is.
It probably makes sense to replace the instance id with the device path
once all devices are converted over to qdev+vmstate, so we avoid the
nasty ordering issues altogether.
cheers,
Gerd
