changelog: add relevant changes during 4.14 development window

Add entries for the relevant changes I've been working on during the
4.14 development time frame. Mostly performance improvements related
to pvshim scalability issues when running with high number of vCPUs.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Paul Durrant <paul@xen.org>

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b11e9bc4e32fd588ea6df63838757a8b205f3702..554eeb6a121626d99a4da7581ca15061518e2b84 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### 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.
 
 ## [4.13.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.13.0) - 2019-12-17