virtio_load checks features that are enabled by the guest and blocks migration if they are not available in the destination host. However, in some cases we can let features through because we know that guests will be able to proceed even without it.
The patch is on top of Orit's at http://permalink.gmane.org/gmane.comp.emulators.qemu/138806. Paolo Bonzini (3): virtio: let devices be permissive on enabled features virtio-balloon: note optional features virtio-blk: note optional features hw/virtio-balloon.c | 2 +- hw/virtio-blk.c | 2 +- hw/virtio-net.c | 2 +- hw/virtio-scsi.c | 2 +- hw/virtio-serial-bus.c | 2 +- hw/virtio.c | 8 +++++--- hw/virtio.h | 2 +- 7 files changed, 11 insertions(+), 9 deletions(-) -- 1.7.7.6
