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build, release-notes.md: Document 0.9.0 release
Update release notes and version number for the new release. Signed-off-by: Rob Bradford <robert.bradford@intel.com>
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Rob Bradford
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@ -196,7 +196,7 @@ dependencies = [
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[[package]]
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name = "cloud-hypervisor"
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version = "0.8.0"
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version = "0.9.0"
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dependencies = [
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"clap",
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"credibility",
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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 = "0.8.0"
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version = "0.9.0"
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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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114
release-notes.md
114
release-notes.md
@ -7,6 +7,29 @@
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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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- [v0.9.0](#v090)
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- [`io_uring` Based Block Device Support](#io_uring-based-block-device-support)
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- [Block and Network Device Statistics](#block-and-network-device-statistics)
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- [HTTP API Responses](#http-api-responses)
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- [CPU Topology](#cpu-topology)
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- [Release Build Optimization](#release-build-optimization)
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- [Hypervisor Abstraction](#hypervisor-abstraction)
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- [Snapshot/Restore Improvements](#snapshotrestore-improvements)
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- [Virtio Memory Ballooning Support](#virtio-memory-ballooning-support)
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- [Enhancements to ARM64 Support](#enhancements-to-arm64-support)
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- [Intel SGX Support](#intel-sgx-support)
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- [`Seccomp` Sandbox Improvements](#seccomp-sandbox-improvements)
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- [Notable Bug Fixes](#notable-bug-fixes)
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- [Contributors](#contributors)
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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-1)
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- [Command Line and API Changes](#command-line-and-api-changes)
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- [Contributors](#contributors-1)
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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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@ -16,14 +39,14 @@
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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-1)
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- [Contributors](#contributors-1)
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- [Contributors](#contributors-2)
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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-2)
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- [Contributors](#contributors-3)
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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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@ -31,7 +54,7 @@
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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-3)
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- [Contributors](#contributors-4)
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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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@ -40,7 +63,7 @@
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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-4)
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- [Contributors](#contributors-5)
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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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@ -67,6 +90,89 @@
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- [Unit testing](#unit-testing)
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- [Integration tests parallelization](#integration-tests-parallelization)
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# v0.9.0
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This release has been tracked through the [0.9.0 project](https://github.com/cloud-hypervisor/cloud-hypervisor/projects/12).
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Highlights for `cloud-hypervisor` version 0.9.0 include:
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### `io_uring` Based Block Device Support
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If the `io_uring` feature is enabled and the host kernel supports it then `io_uring` will be used for block devices. This results a very significant performance improvement.
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### Block and Network Device Statistics
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Statistics for activity of the `virtio` network and block devices is now exposed through a new `vm.counters` HTTP API entry point. These take the form of simple counters which can be used to observe the activity of the VM.
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### HTTP API Responses
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The HTTP API for adding devices now responds with the name that was assigned to the device as well the PCI BDF.
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### CPU Topology
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A `topology` parameter has been added to `--cpus` which allows the configuration of the guest CPU topology allowing the user to specify the numbers of sockets, packages per socket, cores per package and threads per core.
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### Release Build Optimization
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Our release build is now built with LTO (*Link Time Optimization*) which results in a ~20% reduction in the binary size.
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### Hypervisor Abstraction
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A new abstraction has been introduced, in the form of a `hypervisor` crate so as to enable the support of additional hypervisors beyond `KVM`.
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### Snapshot/Restore Improvements
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Multiple improvements have been made to the VM snapshot/restore support that was added in the last release. This includes persisting more vCPU state and in particular preserving the guest paravirtualized clock in order to avoid vCPU hangs inside the guest when running with multiple vCPUs.
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### Virtio Memory Ballooning Support
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A `virtio-balloon` device has been added, controlled through the `resize` control, which allows the reclamation of host memory by resizing a memory balloon inside the guest.
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### Enhancements to ARM64 Support
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The ARM64 support introduced in the last release has been further enhanced with support for using PCI for exposing devices into the guest as well as multiple bug fixes. It also now supports using an initramfs when booting.
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### Intel SGX Support
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The guest can now use Intel SGX if the host supports it. Details can be found in the dedicated [SGX documentation](docs/intel_sgx.md).
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### `Seccomp` Sandbox Improvements
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The most frequently used virtio devices are now isolated with their own `seccomp` filters. It is also now possible to pass `--seccomp=log` which result in the logging of requests that would have otherwise been denied to further aid development.
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### Notable Bug Fixes
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* Our `virtio-vsock` implementation has been resynced with the implementation from Firecracker and includes multiple bug fixes.
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* CPU hotplug has been fixed so that it is now possible to add, remove, and re-add vCPUs (#1338)
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* A workaround is now in place for when KVM reports MSRs available MSRs that are in fact unreadable preventing snapshot/restore from working correctly (#1543).
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* `virtio-mmio` based devices are now more widely tested (#275).
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* Multiple issues have been fixed with virtio device configuration (#1217)
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* Console input was wrongly consumed by both `virtio-console` and the serial. (#1521)
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### Contributors
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Many thanks to everyone who has contributed to our 0.9.0 release including some new faces.
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* Anatol Belski <ab@php.net>
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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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* Howard Zhang <howard.zhang@arm.com>
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* Hui Zhu <teawater@antfin.com>
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* Jianyong Wu <jianyong.wu@arm.com>
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* Jose Carlos Venegas Munoz <jose.carlos.venegas.munoz@intel.com>
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* LiYa'nan <oliverliyn@gmail.com>
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* Michael Zhao <michael.zhao@arm.com>
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* Muminul Islam <muislam@microsoft.com>
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* Praveen Paladugu <prapal@microsoft.com>
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* Ricardo Koller <ricarkol@gmail.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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* Stefano Garzarella <sgarzare@redhat.com>
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* Wei Liu <liuwe@microsoft.com>
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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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