When a domain starts we need to check what CPU features were enabled and
if any of the features we asked for were disabled. Currently this
requires more than 470 QMP commands (and the number is growing everytime
QEMU adds a new feature or other property to the CPU object). Thanks to
a new qom-list-get QMP command introduced by QEMU 7.1 we can replace all
those commands with just a single one.

On my host using a minimal domain with no devices the startup time went
down to about 200 ms from 400 ms before this series.

Jiri Denemark (14):
  qemu: Drop legacy probing of CPU features
  tests: Add a test for qemuMonitorJSONGetGuestCPU
  tests: Test qemuMonitorJSONGetGuestCPU with empty unavailable-features
  qemu: Generalize filtering in qemuMonitorJSONParsePropsList
  qemu: Move feature filtering to qemuMonitorJSONGetCPUProperties
  qemu: Parse properties list from any JSON array
  qemu: Use qom-list-get for checking enabled CPU features
  tests: Test qemuMonitorJSONGetGuestCPU with qom-get-list
  qemu: Add qemuMonitorJSONCPUDataAddFeatures helper
  qemu: Merge qemuMonitorJSONGetCPUData in qemuMonitorJSONGetGuestCPU
  qemu: Always fetch disabled features in qemuMonitorJSONGetGuestCPU
  qemu: Merge qemuMonitorJSONGetCPUDataDisabled in
    qemuMonitorJSONGetGuestCPU
  qemu: Let qemuMonitorJSONGetCPUProperties also return disabled
    features
  qemu: Don't query unavailable-features if qom-list-get is supported

 src/qemu/qemu_capabilities.c                  |    2 +
 src/qemu/qemu_capabilities.h                  |    1 +
 src/qemu/qemu_monitor.c                       |   43 +-
 src/qemu/qemu_monitor.h                       |    6 +-
 src/qemu/qemu_monitor_json.c                  |  383 +-
 src/qemu/qemu_monitor_json.h                  |    7 +-
 src/qemu/qemu_process.c                       |   20 +-
 .../caps_10.1.0_x86_64.xml                    |    1 +
 .../caps_10.2.0_x86_64.xml                    |    1 +
 .../get-guest-cpu-SierraForest-disabled.xml   |    7 +
 .../get-guest-cpu-SierraForest-enabled.xml    |    9 +
 .../get-guest-cpu-SierraForest-legacy.json    | 8680 +++++++++++++++++
 .../get-guest-cpu-SierraForest.json           | 2962 ++++++
 .../get-guest-cpu-SkylakeClient-disabled.xml  |    2 +
 ...> get-guest-cpu-SkylakeClient-enabled.xml} |   10 +-
 .../get-guest-cpu-SkylakeClient-legacy.json   | 8671 ++++++++++++++++
 .../get-guest-cpu-SkylakeClient.json          | 2953 ++++++
 .../qemumonitorjson-getcpu-ecx.json           |   57 -
 .../qemumonitorjson-getcpu-full.data          |    5 -
 .../qemumonitorjson-getcpu-full.json          |   46 -
 .../qemumonitorjson-getcpu-host.data          |    6 -
 .../qemumonitorjson-getcpu-host.json          |   45 -
 tests/qemumonitorjsontest.c                   |  191 +-
 23 files changed, 23532 insertions(+), 576 deletions(-)
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SierraForest-disabled.xml
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SierraForest-enabled.xml
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SierraForest-legacy.json
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SierraForest.json
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SkylakeClient-disabled.xml
 rename tests/qemumonitorjsondata/{qemumonitorjson-getcpu-ecx.data => get-guest-cpu-SkylakeClient-enabled.xml} (53%)
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SkylakeClient-legacy.json
 create mode 100644 tests/qemumonitorjsondata/get-guest-cpu-SkylakeClient.json
 delete mode 100644 tests/qemumonitorjsondata/qemumonitorjson-getcpu-ecx.json
 delete mode 100644 tests/qemumonitorjsondata/qemumonitorjson-getcpu-full.data
 delete mode 100644 tests/qemumonitorjsondata/qemumonitorjson-getcpu-full.json
 delete mode 100644 tests/qemumonitorjsondata/qemumonitorjson-getcpu-host.data
 delete mode 100644 tests/qemumonitorjsondata/qemumonitorjson-getcpu-host.json

-- 
2.51.0