On 24/03/2015 13:48, Markus Armbruster wrote:
> Use of -drive if=floppy with onboard pc87312 (machine "prep") shouldn't
> be affected. Likewise for connecting onboard m25p80-generic derivatives
> with if=mtd drives, or onboard ssi-sd with if=sd.
Exactly.
> Weird usage similar to the one you caught in time for sdhci-pci (--drive
> if=sd --device sdhci-pci) would break. It's possible when the target
> has the device, and the machine type has a suitable bus.
>
> * pc87312
>
> Depends on CONFIG_PC87312, set in {ppc,ppc64}-softmmu.mak.
>
> Requires an ISA bus. I believe "prep" is the only machine providing
> one.
You can add one with -device i82378. Actually used in
tests/endianness-test.c, hence I guess supported.
> If Andreas agrees, I can set cannot_instantiate_with_device_add_yet
> for pc87312 now.
Could do that, could also decide that "-device i82378 -device pc87312"
is a valid way to add all the legacy crap to a PCI machine. In which
case supporting "-drive if=floppy" is a weird feature but it's also hard
to call it a bug.
The difference with other devices is that you can only add it once.
It's a big difference.
> * ssi-sd
>
> I guess we want to document that --device ssi-sd will at some point
> cease to auto-connect to the next available if=sd drive and require
> the usual drive property instead. Okay?
>
> * m25p80-generic
>
> Document just like ssi-sd.
Ack for these two. Boards can still hook -drive if={sd,mtd} to them,
but (hypothetical) users would have to switch to -drive if=none.
Paolo
> [...]
>> Acked-by: Paolo Bonzini <pbonz...@redhat.com>
>
> Thanks!
>
