2024

slides

• 日辰 : https://pretalx.com/kvm-forum-2024/schedule/
• slides : https://kvm-forum.qemu.org/2024/

优先关注的:

IOThread Virtqueue Mapping: Improving virtio-blk SMP scalability in QEMU

• https://pretalx.com/kvm-forum-2024/talk/WATK7U/
  • 🌟 不多说了，重中之重

QEMU livemigration device state transfer parallelization via multifd channels

• https://kvm-forum.qemu.org/2024/kvm-forum-2024-multifd-device-state-transfer_3K5EQIG.pdf

好吧，大厂果然高级，居然是

The effort concentrated on setups with Mellanox ConnectX-7 smart NIC So some information is specific to this device and its mlx5 Linux kernel driver

• 128 GiB of on-board RAM, so a lot of possible device state
• Realistic setups are on order of hundreds of MiB of device state per VF
  • Unfortunately, only small part can be pre-copied
• But most of the talk is generic to any VFIO device
• GPUs likely have similar amounts of (Video)RAM, if not more
• With some optimizations even more generic

TODO

• Practical and efficient out-of-process storage backends
  • https://pretalx.com/kvm-forum-2024/talk/GWQYTW/
  • 对于 vdap ，vhost-vdap 之类的讨论，还是先搞清楚基本的 vdap 再说吧
• Virtio and the chamber of secrets
  • https://pretalx.com/kvm-forum-2024/talk/7LELGG/ : 可信计算下的 virtio 如何工作
• Live Updates @ Akamai
  • https://pretalx.com/kvm-forum-2024/talk/BFULKK/ : 什么东西?
• SNP Live Migration with guest-memfd and mirror VM

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