linux-kernel - Re: [PATCH v1 2/2] KVM: s390: Topology expose TOPOLOGY facility

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Message-ID: <d0f4ac74-af7b-87ef-f451-bfa3ad90ad01@linux.ibm.com>
Date:   Thu, 15 Jul 2021 12:48:15 +0200
From:   Pierre Morel <pmorel@...ux.ibm.com>
To:     David Hildenbrand <david@...hat.com>, kvm@...r.kernel.org
Cc:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        borntraeger@...ibm.com, frankja@...ux.ibm.com, cohuck@...hat.com,
        thuth@...hat.com, imbrenda@...ux.ibm.com, hca@...ux.ibm.com,
        gor@...ux.ibm.com
Subject: Re: [PATCH v1 2/2] KVM: s390: Topology expose TOPOLOGY facility



On 7/15/21 10:52 AM, David Hildenbrand wrote:
> On 14.07.21 17:25, Pierre Morel wrote:
>> We add the KVM extension KVM_CAP_S390_CPU_TOPOLOGY, this will
>> allow the userland hypervisor to handle the interception of the
>> PTF (Perform topology Function) instruction.
> 
> Ehm, no you don't add any new capability. Or my eyes are too tired to 
> spot it :)

hum, yes, sorry, seems I kept my old commit message as I let fall the 
capability after internal reviews.


> 
>>
>> Signed-off-by: Pierre Morel <pmorel@...ux.ibm.com>
>> ---
>>   arch/s390/tools/gen_facilities.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/s390/tools/gen_facilities.c 
>> b/arch/s390/tools/gen_facilities.c
>> index 606324e56e4e..2c260eb22bae 100644
>> --- a/arch/s390/tools/gen_facilities.c
>> +++ b/arch/s390/tools/gen_facilities.c
>> @@ -112,6 +112,7 @@ static struct facility_def facility_defs[] = {
>>           .name = "FACILITIES_KVM_CPUMODEL",
>>           .bits = (int[]){
>> +            11, /* configuration topology facility */
>>               12, /* AP Query Configuration Information */
>>               15, /* AP Facilities Test */
>>               156, /* etoken facility */
>>
> 
> 

-- 
Pierre Morel
IBM Lab Boeblingen