diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24636b8eaf..e33cf4e1b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
    known user doesn't use it properly, leading to in-guest breakage.
  - The "dom0" option is now supported on Arm and "sve=" sub-option can be used
    to enable dom0 guest to use SVE/SVE2 instructions.
+ - Physical CPU Hotplug downgraded to Experimental and renamed "ACPI CPU
+   Hotplug" for clarity
 
 ### Added
  - On x86, support for features new in Intel Sapphire Rapids CPUs:
diff --git a/SUPPORT.md b/SUPPORT.md
index 44dbd4f190..fff4b4c5ba 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -46,9 +46,9 @@ For the Cortex A77 r0p0 - r1p0, see Errata 1508412.
 
 ## Host hardware support
 
-### Physical CPU Hotplug
+### ACPI CPU Hotplug
 
-    Status, x86: Supported
+    Status, x86: Experimental
 
 ### Physical Memory