Following the new design proposal to improve the restore codepath when
migrating a VM, all virtio devices are supplied with an optional state
they can use to restore from. The restore() implementation every device
was providing has been removed in order to prevent from going through
the restoration twice.
Here is the list of devices now following the new restore design:
- Block (virtio-block)
- Net (virtio-net)
- Rng (virtio-rng)
- Fs (vhost-user-fs)
- Blk (vhost-user-block)
- Net (vhost-user-net)
- Pmem (virtio-pmem)
- Vsock (virtio-vsock)
- Mem (virtio-mem)
- Balloon (virtio-balloon)
- Watchdog (virtio-watchdog)
- Vdpa (vDPA)
- Console (virtio-console)
- Iommu (virtio-iommu)
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The kernel will trigger a SIGBUS upon hugetlb page faults when there is
no huge pages available. We neither have a way to ensure enough huge
pages available on the host system, nor have a way to gracefully report
the lack of huge pages in advance from Cloud Hypervisor. For these
reasons, we have to avoid using huge pages from the virtio-mem fuzzer to
avoid SIGBUS errors.
Signed-off-by: Bo Chen <chen.bo@intel.com>
