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target/s390x/cpu topology: activate CPU topology

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The KVM capability KVM_CAP_S390_CPU_TOPOLOGY is used to
activate the S390_FEAT_CONFIGURATION_TOPOLOGY feature and
the topology facility in the host CPU model for the guest
in the case the topology is available in QEMU and in KVM.

The feature is disabled by default and fenced for SE
(secure execution).

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231016183925.2384704-9-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Pierre Morel 2023-10-16 20:39:12 +02:00 • committed by Thomas Huth
parent af37bad52e
commit f530b9e7da
3 changed files with 11 additions and 1 deletions
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2
hw/s390x/cpu-topology.c
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@ -69,7 +69,7 @@ static int s390_socket_nb(S390CPU *cpu)
*/
bool s390_has_topology(void)
{
return false;
return s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY);
}
/**