Files
qemu/tests/functional/test_x86_cpu_model_versions.py
Paolo Bonzini 1b74aa47c3 tests/functional: test_x86_cpu_model_versions: remove dead tests
Tests that require machines older than 4.2 are now unconditionally skipped.
Remove them if they test legacy behavior, or use the latest machine if
they test current behavior.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-07-14 10:29:17 +02:00

250 lines
11 KiB
Python
Executable File

#!/usr/bin/env python3
#
# Basic validation of x86 versioned CPU models and CPU model aliases
#
# Copyright (c) 2019 Red Hat Inc
#
# Author:
# Eduardo Habkost <ehabkost@redhat.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <http://www.gnu.org/licenses/>.
#
import re
from qemu_test import QemuSystemTest
class X86CPUModelAliases(QemuSystemTest):
"""
Validation of PC CPU model versions and CPU model aliases
"""
def validate_aliases(self, cpus):
for c in cpus.values():
if 'alias-of' in c:
# all aliases must point to a valid CPU model name:
self.assertIn(c['alias-of'], cpus,
'%s.alias-of (%s) is not a valid CPU model name' % (c['name'], c['alias-of']))
# aliases must not point to aliases
self.assertNotIn('alias-of', cpus[c['alias-of']],
'%s.alias-of (%s) points to another alias' % (c['name'], c['alias-of']))
# aliases must not be static
self.assertFalse(c['static'])
def validate_variant_aliases(self, cpus):
# -noTSX, -IBRS and -IBPB variants of CPU models are special:
# they shouldn't have their own versions:
self.assertNotIn("Haswell-noTSX-v1", cpus,
"Haswell-noTSX shouldn't be versioned")
self.assertNotIn("Broadwell-noTSX-v1", cpus,
"Broadwell-noTSX shouldn't be versioned")
self.assertNotIn("Nehalem-IBRS-v1", cpus,
"Nehalem-IBRS shouldn't be versioned")
self.assertNotIn("Westmere-IBRS-v1", cpus,
"Westmere-IBRS shouldn't be versioned")
self.assertNotIn("SandyBridge-IBRS-v1", cpus,
"SandyBridge-IBRS shouldn't be versioned")
self.assertNotIn("IvyBridge-IBRS-v1", cpus,
"IvyBridge-IBRS shouldn't be versioned")
self.assertNotIn("Haswell-noTSX-IBRS-v1", cpus,
"Haswell-noTSX-IBRS shouldn't be versioned")
self.assertNotIn("Haswell-IBRS-v1", cpus,
"Haswell-IBRS shouldn't be versioned")
self.assertNotIn("Broadwell-noTSX-IBRS-v1", cpus,
"Broadwell-noTSX-IBRS shouldn't be versioned")
self.assertNotIn("Broadwell-IBRS-v1", cpus,
"Broadwell-IBRS shouldn't be versioned")
self.assertNotIn("Skylake-Client-IBRS-v1", cpus,
"Skylake-Client-IBRS shouldn't be versioned")
self.assertNotIn("Skylake-Server-IBRS-v1", cpus,
"Skylake-Server-IBRS shouldn't be versioned")
self.assertNotIn("EPYC-IBPB-v1", cpus,
"EPYC-IBPB shouldn't be versioned")
def test_unversioned_alias(self):
"""
Check if unversioned CPU model is an alias pointing to right version
"""
self.set_machine('pc')
self.vm.add_args('-S')
self.vm.launch()
cpus = dict((m['name'], m) for m in
self.vm.cmd('query-cpu-definitions'))
self.assertFalse(cpus['Cascadelake-Server']['static'],
'unversioned Cascadelake-Server CPU model must not be static')
self.assertEqual(cpus['Cascadelake-Server'].get('alias-of'),
'Cascadelake-Server-v1',
'Cascadelake-Server must be an alias of Cascadelake-Server-v1')
self.assertNotIn('alias-of', cpus['Cascadelake-Server-v1'],
'Cascadelake-Server-v1 must not be an alias')
self.assertFalse(cpus['qemu64']['static'],
'unversioned qemu64 CPU model must not be static')
self.assertEqual(cpus['qemu64'].get('alias-of'), 'qemu64-v1',
'qemu64 must be an alias of qemu64-v1')
self.assertNotIn('alias-of', cpus['qemu64-v1'],
'qemu64-v1 must not be an alias')
self.validate_variant_aliases(cpus)
# On recent PC machines, -noTSX and -IBRS models should be aliases:
self.assertEqual(cpus["Haswell"].get('alias-of'),
"Haswell-v1",
"Haswell must be an alias")
self.assertEqual(cpus["Haswell-noTSX"].get('alias-of'),
"Haswell-v2",
"Haswell-noTSX must be an alias")
self.assertEqual(cpus["Haswell-IBRS"].get('alias-of'),
"Haswell-v3",
"Haswell-IBRS must be an alias")
self.assertEqual(cpus["Haswell-noTSX-IBRS"].get('alias-of'),
"Haswell-v4",
"Haswell-noTSX-IBRS must be an alias")
self.assertEqual(cpus["Broadwell"].get('alias-of'),
"Broadwell-v1",
"Broadwell must be an alias")
self.assertEqual(cpus["Broadwell-noTSX"].get('alias-of'),
"Broadwell-v2",
"Broadwell-noTSX must be an alias")
self.assertEqual(cpus["Broadwell-IBRS"].get('alias-of'),
"Broadwell-v3",
"Broadwell-IBRS must be an alias")
self.assertEqual(cpus["Broadwell-noTSX-IBRS"].get('alias-of'),
"Broadwell-v4",
"Broadwell-noTSX-IBRS must be an alias")
self.assertEqual(cpus["Nehalem"].get('alias-of'),
"Nehalem-v1",
"Nehalem must be an alias")
self.assertEqual(cpus["Nehalem-IBRS"].get('alias-of'),
"Nehalem-v2",
"Nehalem-IBRS must be an alias")
self.assertEqual(cpus["Westmere"].get('alias-of'),
"Westmere-v1",
"Westmere must be an alias")
self.assertEqual(cpus["Westmere-IBRS"].get('alias-of'),
"Westmere-v2",
"Westmere-IBRS must be an alias")
self.assertEqual(cpus["SandyBridge"].get('alias-of'),
"SandyBridge-v1",
"SandyBridge must be an alias")
self.assertEqual(cpus["SandyBridge-IBRS"].get('alias-of'),
"SandyBridge-v2",
"SandyBridge-IBRS must be an alias")
self.assertEqual(cpus["IvyBridge"].get('alias-of'),
"IvyBridge-v1",
"IvyBridge must be an alias")
self.assertEqual(cpus["IvyBridge-IBRS"].get('alias-of'),
"IvyBridge-v2",
"IvyBridge-IBRS must be an alias")
self.assertEqual(cpus["Skylake-Client"].get('alias-of'),
"Skylake-Client-v1",
"Skylake-Client must be an alias")
self.assertEqual(cpus["Skylake-Client-IBRS"].get('alias-of'),
"Skylake-Client-v2",
"Skylake-Client-IBRS must be an alias")
self.assertEqual(cpus["Skylake-Server"].get('alias-of'),
"Skylake-Server-v1",
"Skylake-Server must be an alias")
self.assertEqual(cpus["Skylake-Server-IBRS"].get('alias-of'),
"Skylake-Server-v2",
"Skylake-Server-IBRS must be an alias")
self.assertEqual(cpus["EPYC"].get('alias-of'),
"EPYC-v1",
"EPYC must be an alias")
self.assertEqual(cpus["EPYC-IBPB"].get('alias-of'),
"EPYC-v2",
"EPYC-IBPB must be an alias")
self.validate_aliases(cpus)
def test_none_alias(self):
"""
Check if unversioned CPU model is an alias pointing to some version
"""
self.set_machine('none')
self.vm.add_args('-S')
self.vm.launch()
cpus = dict((m['name'], m) for m in
self.vm.cmd('query-cpu-definitions'))
self.assertFalse(cpus['Cascadelake-Server']['static'],
'unversioned Cascadelake-Server CPU model must not be static')
self.assertTrue(re.match('Cascadelake-Server-v[0-9]+', cpus['Cascadelake-Server']['alias-of']),
'Cascadelake-Server must be an alias of versioned CPU model')
self.assertNotIn('alias-of', cpus['Cascadelake-Server-v1'],
'Cascadelake-Server-v1 must not be an alias')
self.assertFalse(cpus['qemu64']['static'],
'unversioned qemu64 CPU model must not be static')
self.assertTrue(re.match('qemu64-v[0-9]+', cpus['qemu64']['alias-of']),
'qemu64 must be an alias of versioned CPU model')
self.assertNotIn('alias-of', cpus['qemu64-v1'],
'qemu64-v1 must not be an alias')
self.validate_aliases(cpus)
class CascadelakeArchCapabilities(QemuSystemTest):
"""
Validation of Cascadelake arch-capabilities
"""
def get_cpu_prop(self, prop):
cpu_path = self.vm.cmd('query-cpus-fast')[0].get('qom-path')
return self.vm.cmd('qom-get', path=cpu_path, property=prop)
def test(self):
self.set_machine('pc')
# machine-type only:
self.vm.add_args('-S')
self.set_vm_arg('-cpu',
'Cascadelake-Server,x-force-features=on,check=off,'
'enforce=off')
self.vm.launch()
self.assertFalse(self.get_cpu_prop('arch-capabilities'),
'pc + Cascadelake-Server should not have arch-capabilities')
def test_unset(self):
self.set_machine('pc')
self.vm.add_args('-S')
self.set_vm_arg('-cpu',
'Cascadelake-Server,x-force-features=on,check=off,'
'enforce=off,-arch-capabilities')
self.vm.launch()
self.assertFalse(self.get_cpu_prop('arch-capabilities'),
'pc + Cascadelake-Server,-arch-capabilities should not have arch-capabilities')
def test_v2_unset(self):
self.set_machine('pc')
self.vm.add_args('-S')
self.set_vm_arg('-cpu',
'Cascadelake-Server-v2,x-force-features=on,check=off,'
'enforce=off,-arch-capabilities')
self.vm.launch()
self.assertFalse(self.get_cpu_prop('arch-capabilities'),
'pc + Cascadelake-Server-v2,-arch-capabilities should not have arch-capabilities')
if __name__ == '__main__':
QemuSystemTest.main()