Bo Chen

@rbradford @sboeuf I am marking it as draft as I want to do a bit more experiments on this fuzzer. Any quick comments, please let me know. Thanks.

> One more improvement might be to set the `Queue` descriptor table, avail ring and used ring addresses, based on the random byte stream provided by the fuzzer. Just need...

This (or any changes to the `VmConfig`) is a breaking change for live-upgrade. I wonder do we want to try to enable the live-upgrade support after the release next week...

@tmakatos That's great to confirm. Also, do you know whether the the NVMe controller from SDPK support live-migration? We want to try both devices for the vfio-user live-migration for CH....

@tmakatos Cool. Thanks for sharing your experiences. That helps a lot. I will start with the GPIO device from libvfio-user for prototyping, and keep an eye on the SDPK PR.

@rbradford @sboeuf Based on VFIO USER spec, besides dirty page tracking over the guest RAM (for potential DMA operations from the device/server side), we will also need to migrate the...

The other general question I have is whether we will spawn a new vfio-user device as the destination device? If my understanding is correct, the live-migration support of vhost-user assumes...

> FYI the existing migration protocol is being deprecated in Linux v5.18 and being replaced with a new migration API (migration v2), see [nutanix/libvfio-user#654 (comment)](https://github.com/nutanix/libvfio-user/issues/654#issuecomment-1063945892) for more details. We're adopting...

Besides the support of restoring PCI devices (e.g. region ranges, interrupts, etc.) being tracked [here](https://github.com/cloud-hypervisor/cloud-hypervisor/issues/2251#issuecomment-1090323607), here is a list of the required changes that are vfio-user specific (details from my...

> Overall looks good, but you must update your comments about the way we're gonna perform `state()`, `set_state()` and `transit_device_state()` as they will follow the updated spec here: https://github.com/tmakatos/muser/blob/migration-v2/docs/vfio-user.rst @sboeuf...