[PATCH v2 0/4] qemu: Add support for free-page-reporting

[Nico Pache]

gitlab issue: https://gitlab.com/libvirt/libvirt/-/issues/79

The virtio-balloon device now has the ability to report free pages
back to the hypervisor for reuse by other programs.

This kernel feature allows for more stable and resource friendly systems.

This feature is available in QEMU and is enabled with free-page-reporting=on
default virt setting should be off but the user should be able to enable it.

Nico Pache (4):
  Document and parser support for the Virtio free page reporting
    feature.
  QEMU: declare qemu capabilities for the Virtio Free page reporting
    feature
  QEMU: introduce Virtio free page reporting feature
  provide testing for free-page-reporting feature in QEMU

 docs/formatdomain.rst                         |  6 ++++
 docs/schemas/domaincommon.rng                 |  5 +++
 src/conf/domain_conf.c                        | 21 +++++++++++
 src/conf/domain_conf.h                        |  1 +
 src/qemu/qemu_capabilities.c                  |  2 ++
 src/qemu/qemu_capabilities.h                  |  1 +
 src/qemu/qemu_command.c                       |  5 +++
 src/qemu/qemu_validate.c                      |  7 ++++
 .../caps_5.1.0.x86_64.xml                     |  1 +
 .../caps_5.2.0.x86_64.xml                     |  1 +
 ...-options-memballoon-freepage-reporting.err |  1 +
 ...loon-freepage-reporting.x86_64-latest.args | 36 +++++++++++++++++++
 ...-options-memballoon-freepage-reporting.xml | 22 ++++++++++++
 tests/qemuxml2argvtest.c                      |  2 ++
 ...-options-memballoon-freepage-reporting.xml | 22 ++++++++++++
 15 files changed, 133 insertions(+)
 create mode 100644 tests/qemuxml2argvdata/virtio-options-memballoon-freepage-reporting.err
 create mode 100644 tests/qemuxml2argvdata/virtio-options-memballoon-freepage-reporting.x86_64-latest.args
 create mode 100644 tests/qemuxml2argvdata/virtio-options-memballoon-freepage-reporting.xml
 create mode 100644 tests/qemuxml2xmloutdata/virtio-options-memballoon-freepage-reporting.xml

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2.18.4