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George Dunlap 8b39f21574 CHANGELOG.md: Add entries for emulation

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Release-acked-by: Ian Jackson <ian.jackson@citrix.com>

2021-04-01 11:31:47 +01:00

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Changelog

Notable changes to Xen will be documented in this file.

The format is based on Keep a Changelog

unstable UNRELEASED - TBD

4.15.0 UNRELEASED - TBD

Added / support upgraded

ARM IOREQ servers (device emulation etc.) (Tech Preview)
Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
ARM SMMUv3 (Tech Preview)
Switched MSR accesses to deny by default policy.
Intel Processor Trace support (Tech Preview)
Named PCI devices for xl/libxl
Support for zstd-compressed dom0 (x86) and domU kernels
Library improvements from NetBSD ports upstreamed
CI loop: Add Alpine Linux, Ubuntu Focal targets; drop CentOS 6
CI loop: Add qemu-based dom0 / domU test for ARM
CI loop: Add dom0less aarch64 smoke test
x86: Allow domains to use AVX-VNNI instructions

Removed / support downgraded

qemu-xen-traditional as host process device model, now "No security support, not recommended". (Use as stub domain device model is still supported - see SUPPORT.md.)

4.14.0 - 2020-07-23

Added

This file and MAINTAINERS entry.
Use x2APIC mode whenever available, regardless of interrupt remapping support.
Performance improvements to guest assisted TLB flushes, either when using the Xen hypercall interface or the viridian one.
Assorted pvshim performance and scalability improvements plus some bug fixes.
Hypervisor framework to ease porting Xen to run on hypervisors.
Initial support to run on Hyper-V.
Initial hypervisor file system (hypfs) support.
libxl support for running qemu-xen device model in a linux stubdomain.
New 'domid_policy', allowing domain-ids to be randomly chosen.
Option to preserve domain-id across migrate or save+restore.
Support in kdd for initial KD protocol handshake for Win 7, 8 and 10 (64 bit).
Tech preview support for Control-flow Execution Technology, with Xen using Supervisor Shadow Stacks for its own protection.

Changed

The CPUID data seen by a guest on boot is now moved in the migration stream. A guest migrating between non-identical hardware will now no longer observe details such as Family/Model/Stepping, Cache, etc changing. An administrator still needs to take care to ensure the features visible to the guest at boot are compatible with anywhere it might migrate.

4.13.0 - 2019-12-17

Pointer to release from which CHANGELOG tracking starts

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