Re: [Qemu-devel] [RFC PATCH 2/5] ppc: Express dependencies of the 'prep' and '40p' machines with kconfig

[Paolo Bonzini <pbonzini@redhat.com>]

On 30/01/19 12:02, Thomas Huth wrote:
> On 2019-01-30 11:25, Thomas Huth wrote:
>> On 2019-01-30 11:17, Paolo Bonzini wrote:
>>> On 30/01/19 10:43, Thomas Huth wrote:
>>>> +    select LSI_SCSI_PCI
>>>
>>> Should NE2000_ISA and LSI_SCSI_PCI be handled the same?  Either rely on
>>> "default y" for both, or select both (I think I prefer the former).
>>
>> Yes. IMHO we should use "select XXX" if the machine has a hard
>> requirement for a device, and "default y" if it can also somehow work
>> without the device. In this case, I did not look carefully enough, since
>> it is apparently possible to use the 40p machine also without the LSI
>> controller when you specify "-nodefaults". So I'll remove this in v2 and
>> rely on the "default y" instead.
> 
> Scratch that. The "select LSI_SCSI_PCI" is currently a hard requirement
> here, otherwise I get a linker error like this:
> 
>  hw/ppc/prep.c:705: undefined reference to `lsi53c8xx_handle_legacy_cmdline'
> 
> So I think we should keep this patch in its current shape. Of course
> we still can clean that up later, but this should not be part of the
> initial Kconfig patch series (which is already big enough).

Sounds good!

Paolo