[xen master] Changelog: Add details about new features for SPR

[patchbot@xxxxxxx]

commit f28fe0849b68411b8d5fdd92875bae0ebd8b1516
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Jan 20 21:58:36 2023 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Mon Feb 6 10:22:12 2023 +0000

    Changelog: Add details about new features for SPR
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Henry Wang <Henry.Wang@xxxxxxx>
---
 CHANGELOG.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6754139713..b116163b62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ The format is based on [Keep a 
Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [unstable 
UNRELEASED](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=staging) - 
TBD
 
+### Added
+ - On x86, support for features new in Intel Sapphire Rapids CPUs:
+   - PKS (Protection Key Supervisor) available to HVM/PVH guests.
+   - VM-Notify used by Xen to mitigate certain micro-architectural pipeline
+     livelocks, instead of crashing the entire server.
+   - Bus-lock detection, used by Xen to mitigate (by rate-limiting) the system
+     wide impact of a guest misusing atomic instructions.
+
 ## 
[4.17.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.17.0) 
- 2022-12-12
 
 ### Changed
--
generated by git-patchbot for /home/xen/git/xen.git#master