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-rw-r--r--docs/about/deprecated.rst8
1 files changed, 8 insertions, 0 deletions
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 7bb4d2f4f6..e934e0a13a 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -328,6 +328,14 @@ from Intel that was not properly allocated. Since version 5.2, the controller
has used a properly allocated identifier. Deprecate the ``use-intel-id``
machine compatibility parameter.
+``-device cxl-type3,memdev=xxxx`` (since 8.0)
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The ``cxl-type3`` device initially only used a single memory backend. With
+the addition of volatile memory support, it is now necessary to distinguish
+between persistent and volatile memory backends. As such, memdev is deprecated
+in favor of persistent-memdev.
+
Block device options
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