[PATCH v2 0/3] virtio: Convert feature properties to OnOffAuto

[Akihiko Odaki <akihiko.odaki@daynix.com>]

This series was spun off from:
"[PATCH 0/3] virtio-net: Convert feature properties to OnOffAuto"
(https://patchew.org/QEMU/20240714-auto-v3-0-e27401aabab3@daynix.com/)

Some features are not always available with vhost. Legacy features are
not available with vp_vdpa in particular. virtio devices used to disable
them when not available even if the corresponding properties were
explicitly set to "on".

QEMU already has OnOffAuto type, which includes the "auto" value to let
it automatically decide the effective value. Convert feature properties
to OnOffAuto and set them "auto" by default to utilize it. This allows
QEMU to report an error if they are set "on" and the corresponding
features are not available.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
Changes in v2:
- Expanded the message of patch "qdev-properties: Accept bool for
  OnOffAuto".
- Link to v1: https://lore.kernel.org/r/20241014-virtio-v1-0-e9ddf7a81891@daynix.com

---
Akihiko Odaki (3):
      qdev-properties: Accept bool for OnOffAuto
      qdev-properties: Add DEFINE_PROP_ON_OFF_AUTO_BIT64()
      virtio: Convert feature properties to OnOffAuto

 include/hw/qdev-properties.h | 18 ++++++++++
 include/hw/virtio/virtio.h   | 38 +++++++++++---------
 hw/core/machine.c            |  4 ++-
 hw/core/qdev-properties.c    | 83 ++++++++++++++++++++++++++++++++++++++++++--
 hw/virtio/virtio-bus.c       | 14 ++++++--
 hw/virtio/virtio.c           |  4 ++-
 6 files changed, 138 insertions(+), 23 deletions(-)
---
base-commit: 7e3b6d8063f245d27eecce5aabe624b5785f2a77
change-id: 20241013-virtio-164ea3f295c3

Best regards,
-- 
Akihiko Odaki <akihiko.odaki@daynix.com>