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

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Message-ID: <01e383ae-9885-e384-f553-c3fbeb040192@linux.ibm.com>
Date:   Tue, 14 Dec 2021 10:01:02 +0100
From:   Alexandra Winter <wintera@...ux.ibm.com>
To:     Pierre Morel <pmorel@...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 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 ??