NEWS: Document Hyper-v never notify feature for spinlocks

Signed-off-by: Friedrich Oslage <friedrich@oslage.de>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

diff --git a/NEWS.rst b/NEWS.rst
index f20d087c791d46c1d406eeab8c1ea02fc46dae15..c7ef7e9eae8d0d962d60af084636b74c4db8a6f2 100644 (file)
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -23,6 +23,15 @@ v11.9.0 (unreleased)
     enlightenments at domain startup into the live XML so that's obvious which
     enlightenments are enabled.
 
+  * Add support for Hyper-V ``spinlocks`` "never notify" mechanism
+
+    The ``retries`` attribute - which defines after how many failed
+    acquisition attempts to notify the hypervisor - can now hold the
+    special value of 4294967295 which means to never notify the
+    hypervisor.
+
+    If the ``retries`` attribute is omitted this value is used.
+
 * **Improvements**
 
   * qemu: Improvements to USB controller model selection