[libvirt] [PATCH 04/13] qemu: Enable PCI multi bus for S390 guests

[Yi Min Zhao]

在 2018/6/2 下午10:16, Ján Tomko 写道:
> On Thu, May 24, 2018 at 02:24:29PM +0200, Xiao Feng Ren wrote:
>> From: Yi Min Zhao <zyimin at linux.ibm.com>
>>
>> QEMU on s390 supports PCI multibus since forever. But zPCI, as extension
>> of PCI device on s390, is the significant capability. Only when zPCI
>> capability is existing, we consider QEMU supports PCI multibus properly.
>> So let enable PCI multibus only if zPCI is supported.
>>
>> Signed-off-by: Yi Min Zhao <zyimin at linux.ibm.com>
>> Reviewed-by: Boris Fiuczynski <fiuczy at linux.vnet.ibm.com>
>> Reviewed-by: Stefan Zimmermann <stzi at linux.ibm.com>
>> Reviewed-by: Bjoern Walk <bwalk at linux.vnet.ibm.com>
>> ---
>> src/qemu/qemu_capabilities.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
>> index e6fd7ee468..3d4f64ca09 100644
>> --- a/src/qemu/qemu_capabilities.c
>> +++ b/src/qemu/qemu_capabilities.c
>> @@ -1716,6 +1716,9 @@ bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr 
>> qemuCaps,
>>         return false;
>>     }
>>
>> +    if (ARCH_IS_S390(def->os.arch))
>
> This includes S390 as well as S390X, do we care about that distinction?
No need, at least from my point of view.
>
> Jano