Virtio 1.0 doesn't include a modern balloon device. At some point we'll likely define an incompatible interface with a different ID. But for now, it's not a big change to support a transitional balloon device: this has the advantage of supporting existing drivers, transparently. The only issue is with the stats buffer, which has misaligned fields. Seems easy to fix by prepending a 6 byte reserved field. I'll post spec patch and qemu patches shortly. Michael S. Tsirkin (6): virtio_balloon: transitional interface virtio: balloon might not be a legacy device virtio_ccw: support non-legacy balloon devices virtio_mmio: support non-legacy balloon devices virtio_pci: support non-legacy balloon devices virtio: drop virtio_device_is_legacy_only include/linux/virtio.h | 2 -- include/uapi/linux/virtio_balloon.h | 6 ++++++ drivers/s390/kvm/virtio_ccw.c | 10 +++------- drivers/virtio/virtio.c | 6 ------ drivers/virtio/virtio_balloon.c | 8 ++++++-- drivers/virtio/virtio_mmio.c | 8 -------- drivers/virtio/virtio_pci_modern.c | 3 --- 7 files changed, 15 insertions(+), 28 deletions(-) -- MST _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
