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s390x/cpu topology: resetting the Topology-Change-Report

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During a subsystem reset the Topology-Change-Report is cleared
by the machine.
Let's ask KVM to clear the Modified Topology Change Report (MTCR)
bit of the SCA in the case of a subsystem reset.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-7-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Pierre Morel 2023-10-16 20:39:10 +02:00 • committed by Thomas Huth
parent a67f05b391
commit 3d6e75f4df
7 changed files with 52 additions and 0 deletions
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11
hw/s390x/cpu-topology.c
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@ -90,6 +90,17 @@ static void s390_topology_init(MachineState *ms)
smp->books * smp->drawers);
}
/**
* s390_topology_reset:
*
* Generic reset for CPU topology, calls s390_topology_reset()
* to reset the kernel Modified Topology Change Record.
*/
void s390_topology_reset(void)
{
s390_cpu_topology_set_changed(false);
}
/**
* s390_topology_cpu_default:
* @cpu: pointer to a S390CPU