[NDCTL PATCH] cxl: Add man page documentation to note the change to disable-port

[Dave Jiang <dave.jiang@intel.com>]

Add a note to warn potential breakage of 'disable-port -m' option
when using an older CXL CLI with a newer kernel.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 Documentation/cxl/cxl-enable-port.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/cxl/cxl-enable-port.txt b/Documentation/cxl/cxl-enable-port.txt
index 00c40509f09e..5d918f8658e5 100644
--- a/Documentation/cxl/cxl-enable-port.txt
+++ b/Documentation/cxl/cxl-enable-port.txt
@@ -33,6 +33,12 @@ OPTIONS
 	memdev is only enabled after all CXL ports in its device topology
 	ancestry are enabled.
 
+	Note: release before v83 will not work starting with kernel v6.18 for
+	the '-m' option. However v83 or later will work with all previous
+	kernels. The kernel starting with v6.18 enumerates the CXL ports
+	and dports differently and the CXL ports hierachy is not established
+	until the memdev is probed by the kernel.
+
 include::debug-option.txt[]
 
 include::../copyright.txt[]

base-commit: b4caae2ed720d2ba51eabf449fd1e1105bd07dd1
-- 
2.50.1