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tests/avocado: s390x cpu topology test dedicated CPU

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A dedicated CPU in vertical polarization can only have
a high entitlement.
Let's check this from both host and guest point of view.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-19-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Pierre Morel 2023-10-16 20:39:22 +02:00 committed by Thomas Huth
parent 16ab722edb
commit 471676bfd2
1 changed files with 33 additions and 0 deletions
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33
tests/avocado/s390_topology.py
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@ -305,3 +305,36 @@ class S390CPUTopology(QemuSystemTest):
self.guest_set_dispatching('0');
self.check_polarization("horizontal")
self.check_topology(0, 0, 0, 0, 'high', False)
def test_dedicated(self):
"""
This test verifies that QEMU adjusts the entitlement correctly when a
CPU is made dedicated.
QEMU retains the entitlement value when horizontal polarization is in effect.
For the guest, the field shows the effective value of the entitlement.
:avocado: tags=arch:s390x
:avocado: tags=machine:s390-ccw-virtio
"""
self.kernel_init()
self.vm.launch()
self.wait_until_booted()
self.system_init()
self.check_polarization("horizontal")
res = self.vm.qmp('set-cpu-topology',
{'core-id': 0, 'dedicated': True})
self.assertEqual(res['return'], {})
self.check_topology(0, 0, 0, 0, 'high', True)
self.check_polarization("horizontal")
self.guest_set_dispatching('1');
self.check_topology(0, 0, 0, 0, 'high', True)
self.check_polarization("vertical:high")
self.guest_set_dispatching('0');
self.check_topology(0, 0, 0, 0, 'high', True)
self.check_polarization("horizontal")