[xen staging] ChangeLog: mention IOMMU superpage support

[patchbot@xxxxxxx]

commit cc7410683db0a98758d03401b628ba8652c20c18
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Aug 5 08:39:02 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Aug 5 08:39:02 2022 +0200

    ChangeLog: mention IOMMU superpage support
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Henry Wang <Henry.Wang@xxxxxxx>
---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6a7755d7b0..a87a193e15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ The format is based on [Keep a 
Changelog](https://keepachangelog.com/en/1.0.0/)
  - On x86 "vga=current" can now be used together with GrUB2's gfxpayload 
setting. Note that
    this requires use of "multiboot2" (and "module2") as the GrUB commands 
loading Xen.
 
+### Added / support upgraded
+ - IOMMU superpage support on x86, affecting PV guests as well as HVM/PVH ones
+   when they don't share page tables with the CPU (HAP / EPT / NPT).
+
 ### Removed / support downgraded
  - dropped support for the (x86-only) "vesa-mtrr" and "vesa-remap" command 
line options
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging