* [NDCTL PATCH] cxl: Add man page documentation to note the change to disable-port
@ 2025-09-17 23:50 Dave Jiang
2025-09-23 22:43 ` Alison Schofield
0 siblings, 1 reply; 2+ messages in thread
From: Dave Jiang @ 2025-09-17 23:50 UTC (permalink / raw)
To: linux-cxl, nvdimm; +Cc: alison.schofield
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [NDCTL PATCH] cxl: Add man page documentation to note the change to disable-port
2025-09-17 23:50 [NDCTL PATCH] cxl: Add man page documentation to note the change to disable-port Dave Jiang
@ 2025-09-23 22:43 ` Alison Schofield
0 siblings, 0 replies; 2+ messages in thread
From: Alison Schofield @ 2025-09-23 22:43 UTC (permalink / raw)
To: Dave Jiang; +Cc: linux-cxl, nvdimm
On Wed, Sep 17, 2025 at 04:50:56PM -0700, Dave Jiang wrote:
> 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>
Applied w minor edits. Thanks!
https://github.com/pmem/ndctl/commit/fdeb4de
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