v0.6.0

What's Changed

New features

• virtio-ballon device with free page reporting
• PCI device passthrough with legacy VFIO API (container and group)
• io_uring based virtio-blk device

Bug fixes and performance improvements

• device passthrough

  • a8e87c6 fix(vfio): handle the flag NORESIZE of an IRQ
  • 3ef3eb0 fix(vfio): open the iommu device as read-only
  • e30be1f fix(cdev): ignore detach calls if not attached yet

• loader

  • e58f221 fix(pvh): check if the alignment is a power of 2
  • fd0f2d8 fix: let align_up/align_down take number of bits

• virtio devices

  • acdfb5d fix(virtio): monitor ioeventfds with IORING_OP_POLL_ADD
  • 95b9d5f fix(virtio): monitor the waker with IORING_OP_POLL_ADD
  • e9fe9c8 fix(virtio): let devices handle hostside io errors
  • 8968a24 fix(virtio): reset io_uring queue_submits at start up
  • b306c1a perf(virtio): send 1 interrupt in a single loop

• virtio-blk

  • 9a3857f fix(blk): flush disk file on FLUSH requests

• virtio-net (tried to improve latency but failed)

  • 1177f32 Revert "perf(net): deregister tap from poll while handling events"
  • f365429 perf(net): deregister tap from poll while handling events

• hypervisor

  • 608fb13 test(kvm): use 2-MiB page in the guest
  • 8291ce5 fix(kvm): calculate correct mask for 64bit MMIO

Full Changelog: v0.5.0...v0.6.0