linux-kernel - Re: [PATCH v5 0/1] s390x: KVM: CPU Topology

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Message-ID: <80d924b1-d512-bf64-17c9-746a80776d28@linux.ibm.com>
Date:   Thu, 16 Dec 2021 16:16:02 +0100
From:   Pierre Morel <pmorel@...ux.ibm.com>
To:     Alexandra Winter <wintera@...ux.ibm.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,
        david@...hat.com, thuth@...hat.com, imbrenda@...ux.ibm.com,
        hca@...ux.ibm.com, gor@...ux.ibm.com
Subject: Re: [PATCH v5 0/1] s390x: KVM: CPU Topology



On 12/14/21 10:01, Alexandra Winter wrote:
> 
> 
> On 22.11.21 14:14, Pierre Morel wrote:
>> Hi all,
>>
>> This new series add the implementation of interpretation for
>> the PTF instruction.
>>
>> The series provides:
>> 1- interception of the STSI instruction forwarding the CPU topology
>> 2- interpretation of the PTF instruction
>> 3- a KVM capability for the userland hypervisor to ask KVM to
>>     setup PTF interpretation.
>>
>>
>> 0- Foreword
>>
> [...]
>> We will ignore the following changes inside a STSI(15.1.2):
>> - polarization: only horizontal polarization is currently used in Linux.
>> - CPU Type: only IFL Type are supported in Linux
> I thought Linux can also run on General Purpose CPUs ??
> 

You are right, I will change these comments.
Thanks

-- 
Pierre Morel
IBM Lab Boeblingen