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build, release-notes: Document 0.8.0 release
Update the build version and the release notes for the 0.8.0 release. Signed-off-by: Rob Bradford <robert.bradford@intel.com>
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Rob Bradford
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@ -172,7 +172,7 @@ dependencies = [
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[[package]]
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name = "cloud-hypervisor"
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version = "0.7.0"
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version = "0.8.0"
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dependencies = [
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"arc-swap",
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"clap",
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@ -1,6 +1,6 @@
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[package]
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name = "cloud-hypervisor"
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version = "0.7.0"
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version = "0.8.0"
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authors = ["The Cloud Hypervisor Authors"]
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edition = "2018"
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default-run = "cloud-hypervisor"
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109
release-notes.md
109
release-notes.md
@ -1,3 +1,12 @@
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- [v0.8.0](#v080)
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- [Experimental Snapshot and Restore Support](#experimental-snapshot-and-restore-support)
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- [Experimental ARM64 Support](#experimental-arm64-support)
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- [Support for Using 5-level Paging in Guests](#support-for-using-5-level-paging-in-guests)
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- [Virtio Device Interrupt Suppression for Network Devices](#virtio-device-interrupt-suppression-for-network-devices)
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- [`vhost_user_fs` Improvements](#vhost_user_fs-improvements)
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- [Notable Bug Fixes](#notable-bug-fixes)
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- [Command Line and API Changes](#command-line-and-api-changes)
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- [Contributors](#contributors)
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- [v0.7.0](#v070)
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- [Block, Network, Persistent Memory (PMEM), VirtioFS and Vsock hotplug](#block-network-persistent-memory-pmem-virtiofs-and-vsock-hotplug)
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- [Alternative `libc` Support](#alternative-libc-support)
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@ -6,15 +15,15 @@
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- [Alternative Memory Hotplug: `virtio-mem`](#alternative-memory-hotplug-virtio-mem)
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- [`Seccomp` Sandboxing](#seccomp-sandboxing)
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- [Updated Distribution Support](#updated-distribution-support)
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- [Command Line and API Changes](#command-line-and-api-changes)
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- [Contributors](#contributors)
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- [Command Line and API Changes](#command-line-and-api-changes-1)
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- [Contributors](#contributors-1)
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- [v0.6.0](#v060)
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- [Directly Assigned Devices Hotplug](#directly-assigned-devices-hotplug)
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- [Shared Filesystem Improvements](#shared-filesystem-improvements)
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- [Block and Networking IO Self Offloading](#block-and-networking-io-self-offloading)
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- [Command Line Interface](#command-line-interface)
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- [PVH Boot](#pvh-boot)
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- [Contributors](#contributors-1)
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- [Contributors](#contributors-2)
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- [v0.5.1](#v051)
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- [v0.5.0](#v050)
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- [Virtual Machine Dynamic Resizing](#virtual-machine-dynamic-resizing)
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@ -22,7 +31,7 @@
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- [New Interrupt Management Framework](#new-interrupt-management-framework)
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- [Development Tools](#development-tools)
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- [Kata Containers Integration](#kata-containers-integration)
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- [Contributors](#contributors-2)
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- [Contributors](#contributors-3)
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- [v0.4.0](#v040)
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- [Dynamic virtual CPUs addition](#dynamic-virtual-cpus-addition)
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- [Programmatic firmware tables generation](#programmatic-firmware-tables-generation)
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@ -31,7 +40,7 @@
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- [Userspace IOAPIC by default](#userspace-ioapic-by-default)
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- [PCI BAR reprogramming](#pci-bar-reprogramming)
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- [New `cloud-hypervisor` organization](#new-cloud-hypervisor-organization)
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- [Contributors](#contributors-3)
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- [Contributors](#contributors-4)
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- [v0.3.0](#v030)
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- [Block device offloading](#block-device-offloading)
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- [Network device backend](#network-device-backend)
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@ -58,6 +67,96 @@
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- [Unit testing](#unit-testing)
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- [Integration tests parallelization](#integration-tests-parallelization)
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# v0.8.0
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This release has been tracked through the [0.8.0 project](https://github.com/cloud-hypervisor/cloud-hypervisor/projects/10).
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Highlights for `cloud-hypervisor` version 0.8.0 include:
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### Experimental Snapshot and Restore Support
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This release includes the first version of the snapshot and restore feature.
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This allows a VM to be paused and then subsequently snapshotted. At a later
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point that snapshot may be restored into a new running VM identical to the
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original VM at the point it was paused.
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This feature can be used for offline migration from one VM host to another, to
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allow the upgrading or rebooting of the host machine transparently to the guest
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or for templating the VM. This is an experimental feature and cannot be used on
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a VM using passthrough (VFIO) devices. Issues with SMP have also been observed
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(#1176).
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### Experimental ARM64 Support
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Included in this release is experimental support for running on ARM64.
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Currently only `virtio-mmio` devices and a serial port are supported. Full
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details can be found in the [ARM64 documentation](docs/arm64.md).
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### Support for Using 5-level Paging in Guests
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If the host supports it the guest is now enabled for 5-level paging (aka LA57).
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This works when booting the Linux kernel with a vmlinux, bzImage or firmware
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based boot. However booting an ELF kernel built with `CONFIG_PVH=y` does not
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work due to current limitations in the PVH boot process.
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### Virtio Device Interrupt Suppression for Network Devices
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With `virtio-net` and `vhost-user-net` devices the guest can suppress
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interrupts from the VMM by using the `VIRTIO_RING_F_EVENT_IDX` feature. This
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can lead to an improvement in performance by reducing the number of interrupts
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the guest must service.
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### `vhost_user_fs` Improvements
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The implementation in Cloud Hypervisor of the VirtioFS server now supports sandboxing itself with `seccomp`.
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### Notable Bug Fixes
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* VMs that have not yet been booted can now be deleted (#1110).
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* By creating the `tap` device ahead of creating the VM it is not required to
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run the `cloud-hypervisor` binary with `CAP_NET_ADMIN` (#1273).
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* Block I/O via `virtio-block` or `vhost-user-block` now correctly adheres to
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the specification and synchronizes to the underlying filesystem as required
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based on guest feature negotiation. This avoids potential data loss (#399,
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#1216).
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* When booting with a large number of vCPUs then the ACPI table would be
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overwritten by the SMP `MPTABLE`. When compiled with the `acpi` feature the
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`MPTABLE` will no longer be generated (#1132).
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* Shutting down VMs that have been paused is now supported (#816).
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* Created socket files are deleted on shutdown (#1083).
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* Trying to use passthrough devices (VFIO) will be rejected on `mmio` builds
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(#751).
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### Command Line and API Changes
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This is non exhaustive list of HTTP API and command line changes:
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* All user visible socket parameters are now consistently called `socket`
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rather than `sock` in some cases.
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* The `ch-remote` tool now shows any error message generated by the VMM
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* The `wce` parameter has been removed from `--disk` as the feature is always
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offered for negotiation.
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* `--net` has gained a `host_mac` option that allows the setting of the MAC
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address for the `tap` device on the host.
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### Contributors
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Many thanks to everyone who has contributed to our 0.8.0 release including some new faces.
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* Anatol Belski <ab@php.net>
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* Arron Wang <arron.wang@intel.com>
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* Bo Chen <chen.bo@intel.com>
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* Dr. David Alan Gilbert <dgilbert@redhat.com>
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* Henry Wang <Henry.Wang@arm.com>
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* Hui Zhu <teawater@antfin.com>
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* LiYa'nan <oliverliyn@gmail.com>
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* Michael Zhao <michael.zhao@arm.com>
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* Rob Bradford <robert.bradford@intel.com>
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* Samuel Ortiz <sameo@linux.intel.com>
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* Sebastien Boeuf <sebastien.boeuf@intel.com>
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* Sergio Lopez <slp@redhat.com>
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# v0.7.0
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This release has been tracked through the [0.7.0 project](https://github.com/cloud-hypervisor/cloud-hypervisor/projects/7).
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