Re: [Qemu-devel] [PATCH 2/3] ppc64-softmmu: Remove unsupported FDC from config

[Alexey Kardashevskiy <aik@ozlabs.ru>]

On 03/10/2015 02:58 PM, David Gibson wrote:
> On Tue, Mar 10, 2015 at 02:52:48PM +1100, Alexey Kardashevskiy wrote:
>> On 03/10/2015 01:39 AM, Alexey Kardashevskiy wrote:
>>> On 03/09/2015 11:31 PM, Alexander Graf wrote:
>>>>
>>>>
>>>> On 02.03.15 00:46, Alexey Kardashevskiy wrote:
>>>>> This removes floppy disks support as it is not supported by any PPC64
>>>>> system anyway as the only way to have floppy disk on such systems would
>>>>> be an ISA bus and Linux kernels seems have never had such support.
>>>>>
>>>>> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
>>>>
>>>> I removed this patch from my queue again. The ppc64-softmmu target can
>>>> execute -M PReP which in turn uses the fdc.
>>>
>>>
>>> Out of curiosity - do you have actual 64bit guests being able to run on
>>> PReP? :) Current Linux ditched its support...
>>
>>
>> Paul suggested that there has never ever been a 64bit PReP CPU so there is
>> no point in emulating it in QEMU. Or there is some reason for that?
>
> IIUC, qemu-system-ppc64 (roughly speaking) emulates a superset of what
> qemu-system-ppc does, not a different set of hardware.

Well, default-configs/ppc-softmmu.mak does not include 
default-configs/ppc64-softmmu.mak or vice versa so I would say these are 
pretty independent and I would simply remove CONFIG_PREP* from 
default-configs/ppc64-softmmu.mak.


-- 
Alexey