[PATCH 00/10] Introduce virtio-mem <memory/> model

[Michal Privoznik]

Technically, this is another version of:

https://www.redhat.com/archives/libvir-list/2020-December/msg00199.html

But since virtio-pmem part is pushed now, I've reworked virtio-mem a bit
and sending it as a new series.

For curious ones, David summarized behaviour well when implementing
virtio-mem support in kernel:

https://lwn.net/Articles/755423/

For less curious ones:

  # virsh update-memory $dom --requested-size 4G

adds additional 4GiB of RAM to guest;

  # virsh update-memory $dom --requested-size 0

removes those 4GiB added earlier.

Patches are also available on my GitLab:

https://gitlab.com/MichalPrivoznik/libvirt/-/tree/virtio_mem_v3


Michal Prívozník (10):
  virhostmem: Introduce virHostMemGetTHPSize()
  qemu_capabilities: Introduce QEMU_CAPS_DEVICE_VIRTIO_MEM_PCI
  conf: Introduce virtio-mem <memory/> model
  qemu: Build command line for virtio-mem
  qemu: Wire up <memory/> live update
  qemu: Wire up MEMORY_DEVICE_SIZE_CHANGE event
  qemu: Refresh the actual size of virtio-mem on monitor reconnect
  qemu: Recalculate balloon on MEMORY_DEVICE_SIZE_CHANGE event and
    reconnect
  virsh: Introduce update-memory command
  news: document recent virtio memory addition

 NEWS.rst                                      |   7 +
 docs/formatdomain.rst                         |  42 +++-
 docs/manpages/virsh.rst                       |  31 +++
 docs/schemas/domaincommon.rng                 |  16 ++
 src/conf/domain_conf.c                        | 100 ++++++++-
 src/conf/domain_conf.h                        |  13 ++
 src/conf/domain_validate.c                    |  39 ++++
 src/libvirt_private.syms                      |   3 +
 src/qemu/qemu_alias.c                         |  10 +-
 src/qemu/qemu_capabilities.c                  |   2 +
 src/qemu/qemu_capabilities.h                  |   1 +
 src/qemu/qemu_command.c                       |  13 +-
 src/qemu/qemu_domain.c                        |  50 ++++-
 src/qemu/qemu_domain.h                        |   1 +
 src/qemu/qemu_domain_address.c                |  37 ++-
 src/qemu/qemu_driver.c                        | 211 +++++++++++++++++-
 src/qemu/qemu_hotplug.c                       |  18 ++
 src/qemu/qemu_hotplug.h                       |   5 +
 src/qemu/qemu_monitor.c                       |  37 +++
 src/qemu/qemu_monitor.h                       |  27 +++
 src/qemu/qemu_monitor_json.c                  |  94 ++++++--
 src/qemu/qemu_monitor_json.h                  |   5 +
 src/qemu/qemu_process.c                       | 101 ++++++++-
 src/qemu/qemu_validate.c                      |   8 +
 src/security/security_apparmor.c              |   1 +
 src/security/security_dac.c                   |   2 +
 src/security/security_selinux.c               |   2 +
 src/util/virhostmem.c                         |  63 ++++++
 src/util/virhostmem.h                         |   3 +
 tests/domaincapsmock.c                        |   9 +
 .../caps_5.1.0.x86_64.xml                     |   1 +
 .../caps_5.2.0.x86_64.xml                     |   1 +
 ...mory-hotplug-virtio-mem.x86_64-latest.args |  49 ++++
 .../memory-hotplug-virtio-mem.xml             |  66 ++++++
 tests/qemuxml2argvtest.c                      |   1 +
 ...emory-hotplug-virtio-mem.x86_64-latest.xml |   1 +
 tests/qemuxml2xmltest.c                       |   1 +
 tools/virsh-domain.c                          | 154 +++++++++++++
 38 files changed, 1165 insertions(+), 60 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/memory-hotplug-virtio-mem.x86_64-latest.args
 create mode 100644 tests/qemuxml2argvdata/memory-hotplug-virtio-mem.xml
 create mode 120000 tests/qemuxml2xmloutdata/memory-hotplug-virtio-mem.x86_64-latest.xml

-- 
2.26.2