[libvirt] [PATCH v2 0/7] Finish support for IA32_ARCH_CAPABILITIES MSR features

[Jiri Denemark]

As promised in v1 this series contains a few additional patches which
limit usage of MSR features to QEMU that supports "unavailable-features"
CPU property.

This series intentionally enables MSR features for all QEMU versions
before restricting the usage to make this restriction more visible in
the test results.

Version 2:
- all but 2 patches from version 1 were pushed
- 5 new patches

Jiri Denemark (7):
  conf: Introduce virCPUDefCheckFeatures
  cpu_x86: Turn virCPUx86DataIteratorInit into a function
  cpu_x86: Introduce virCPUx86FeatureIsMSR
  cpu_x86: Read CPU features from IA32_ARCH_CAPABILITIES MSR
  cpu_map: Introduce IA32_ARCH_CAPABILITIES MSR features
  qemu: Forbid MSR features with old QEMU
  qemu: Drop MSR features from host-model with old QEMU

 src/conf/cpu_conf.c                           | 33 +++++++
 src/conf/cpu_conf.h                           |  6 ++
 src/cpu/cpu_x86.c                             | 96 +++++++++++++++++--
 src/cpu/cpu_x86.h                             |  3 +
 src/cpu_map/x86_features.xml                  | 20 ++++
 src/libvirt_private.syms                      |  2 +
 src/qemu/qemu_capabilities.c                  | 16 ++++
 src/qemu/qemu_process.c                       | 29 +++++-
 .../x86_64-cpuid-Core-i7-7600U-enabled.xml    |  1 +
 .../x86_64-cpuid-Core-i7-7600U-json.xml       |  1 +
 ...86_64-cpuid-Xeon-Platinum-8268-enabled.xml |  1 +
 .../x86_64-cpuid-Xeon-Platinum-8268-guest.xml |  4 +
 .../x86_64-cpuid-Xeon-Platinum-8268-host.xml  |  4 +
 .../x86_64-cpuid-Xeon-Platinum-8268-json.xml  |  3 +
 .../qemu_4.1.0.x86_64.xml                     |  1 +
 15 files changed, 207 insertions(+), 13 deletions(-)

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2.22.0