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Re: [PATCH v9 09/10] s390x/cpu_topology: activating CPU topology

From: Pierre Morel
Subject: Re: [PATCH v9 09/10] s390x/cpu_topology: activating CPU topology
Date: Mon, 5 Sep 2022 17:29:56 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0

On 9/2/22 09:55, Pierre Morel wrote:
Starting with a new machine, s390-virtio-ccw-7.2, the machine
property topology-disable is set to false while it is kept to
true for older machine.
This allows migrating older machine without disabling the ctop
CPU feature for older machine, thus keeping existing start scripts.

The KVM capability, KVM_CAP_S390_CPU_TOPOLOGY is used to
activate the S390_FEAT_CONFIGURATION_TOPOLOGY feature and
the topology facility for the guest in the case the topology
is not disabled.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>

Sorry, forget this patch I made a stupid rebase error and lost half of the code.

Pierre Morel
IBM Lab Boeblingen

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