tests/acceptance/x86_cpu_model_versions.py

   1 #!/usr/bin/env python
   2 #
   3 # Basic validation of x86 versioned CPU models and CPU model aliases
   4 #
   5 #  Copyright (c) 2019 Red Hat Inc
   6 #
   7 # Author:
   8 #  Eduardo Habkost <ehabkost@redhat.com>
   9 #
  10 # This library is free software; you can redistribute it and/or
  11 # modify it under the terms of the GNU Lesser General Public
  12 # License as published by the Free Software Foundation; either
  13 # version 2 of the License, or (at your option) any later version.
  14 #
  15 # This library is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 # Lesser General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU Lesser General Public
  21 # License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22 #
  23
  24
  25 import avocado_qemu
  26 import re
  27
  28 class X86CPUModelAliases(avocado_qemu.Test):
  29     """
  30     Validation of PC CPU model versions and CPU model aliases
  31
  32     :avocado: tags=arch:x86_64
  33     """
  34     def validate_aliases(self, cpus):
  35         for c in cpus.values():
  36             if 'alias-of' in c:
  37                 # all aliases must point to a valid CPU model name:
  38                 self.assertIn(c['alias-of'], cpus,
  39                               '%s.alias-of (%s) is not a valid CPU model name' % (c['name'], c['alias-of']))
  40                 # aliases must not point to aliases
  41                 self.assertNotIn('alias-of', cpus[c['alias-of']],
  42                                  '%s.alias-of (%s) points to another alias' % (c['name'], c['alias-of']))
  43
  44                 # aliases must not be static
  45                 self.assertFalse(c['static'])
  46
  47     def validate_variant_aliases(self, cpus):
  48         # -noTSX, -IBRS and -IBPB variants of CPU models are special:
  49         # they shouldn't have their own versions:
  50         self.assertNotIn("Haswell-noTSX-v1", cpus,
  51                          "Haswell-noTSX shouldn't be versioned")
  52         self.assertNotIn("Broadwell-noTSX-v1", cpus,
  53                          "Broadwell-noTSX shouldn't be versioned")
  54         self.assertNotIn("Nehalem-IBRS-v1", cpus,
  55                          "Nehalem-IBRS shouldn't be versioned")
  56         self.assertNotIn("Westmere-IBRS-v1", cpus,
  57                          "Westmere-IBRS shouldn't be versioned")
  58         self.assertNotIn("SandyBridge-IBRS-v1", cpus,
  59                          "SandyBridge-IBRS shouldn't be versioned")
  60         self.assertNotIn("IvyBridge-IBRS-v1", cpus,
  61                          "IvyBridge-IBRS shouldn't be versioned")
  62         self.assertNotIn("Haswell-noTSX-IBRS-v1", cpus,
  63                          "Haswell-noTSX-IBRS shouldn't be versioned")
  64         self.assertNotIn("Haswell-IBRS-v1", cpus,
  65                          "Haswell-IBRS shouldn't be versioned")
  66         self.assertNotIn("Broadwell-noTSX-IBRS-v1", cpus,
  67                          "Broadwell-noTSX-IBRS shouldn't be versioned")
  68         self.assertNotIn("Broadwell-IBRS-v1", cpus,
  69                          "Broadwell-IBRS shouldn't be versioned")
  70         self.assertNotIn("Skylake-Client-IBRS-v1", cpus,
  71                          "Skylake-Client-IBRS shouldn't be versioned")
  72         self.assertNotIn("Skylake-Server-IBRS-v1", cpus,
  73                          "Skylake-Server-IBRS shouldn't be versioned")
  74         self.assertNotIn("EPYC-IBPB-v1", cpus,
  75                          "EPYC-IBPB shouldn't be versioned")
  76
  77     def test_4_0_alias_compatibility(self):
  78         """Check if pc-*-4.0 unversioned CPU model won't be reported as aliases"""
  79         # pc-*-4.0 won't expose non-versioned CPU models as aliases
  80         # We do this to help management software to keep compatibility
  81         # with older QEMU versions that didn't have the versioned CPU model
  82         self.vm.add_args('-S')
  83         self.vm.set_machine('pc-i440fx-4.0')
  84         self.vm.launch()
  85         cpus = dict((m['name'], m) for m in self.vm.command('query-cpu-definitions'))
  86
  87         self.assertFalse(cpus['Cascadelake-Server']['static'],
  88                          'unversioned Cascadelake-Server CPU model must not be static')
  89         self.assertNotIn('alias-of', cpus['Cascadelake-Server'],
  90                          'Cascadelake-Server must not be an alias')
  91         self.assertNotIn('alias-of', cpus['Cascadelake-Server-v1'],
  92                          'Cascadelake-Server-v1 must not be an alias')
  93
  94         self.assertFalse(cpus['qemu64']['static'],
  95                          'unversioned qemu64 CPU model must not be static')
  96         self.assertNotIn('alias-of', cpus['qemu64'],
  97                          'qemu64 must not be an alias')
  98         self.assertNotIn('alias-of', cpus['qemu64-v1'],
  99                          'qemu64-v1 must not be an alias')
 100
 101         self.validate_variant_aliases(cpus)
 102
 103         # On pc-*-4.0, no CPU model should be reported as an alias:
 104         for name,c in cpus.items():
 105             self.assertNotIn('alias-of', c, "%s shouldn't be an alias" % (name))