On Mon, 30 Mar 2015 19:37:08 +0200
"Michael S. Tsirkin" <> wrote:
> 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.
This is needed to support a ballooner on transports that don't support
mixing legacy and 1.0, right?
>
> The only issue is with the stats buffer, which has misaligned fields.
> Seems easy to fix by prepending a 6 byte reserved field.
I assume you also define the stats fields to be le for 1.0?
>
> I'll post spec patch and qemu patches shortly.
I'll defer review until then.
>
> 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(-)
>
