Re: [Qemu-devel] [PATCH 41/52] isa: express dependencies with kconfig

[Paolo Bonzini]

On 30/01/19 11:53, Thomas Huth wrote:
>> diff --git a/hw/watchdog/Kconfig b/hw/watchdog/Kconfig
>> index edb3d42..35ccb72 100644
>> --- a/hw/watchdog/Kconfig
>> +++ b/hw/watchdog/Kconfig
>> @@ -8,6 +8,8 @@ config WDT_IB6300ESB
>>  
>>  config WDT_IB700
>>      bool
>> +    default y
>> +    depends on ISA_BUS
> By the way, for pluggable ISA devices (like NE2000_ISA or WDT_IB700), it
> would be great to have a ISA_DEVICES config switch, just like the
> "PCI_DEVICES" switch, which the ISA devices should then depend on
> instead of "ISA_BUS". Then it would be easier for the users to disable
> optional devices in their builds.

Note that the only reason for PCI_DEVICES's existence is that s390x does
not want _all_ PCI devices.  Is there a use case for disabling
CONFIG_ISA_DEVICES but not wanting to base your configuration on
"allnoconfig"?

Paolo