doc: announce behavior change in bus probing

Announce a behavior change in the setting of the device->numa_node field
by the bus driver during the probe operation.

Link: https://patches.dpdk.org/project/dpdk/patch/20211026090610.10823-1-houssem.bouhlel@6wind.com/
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 0671fb2..e49d754 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -128,3 +128,9 @@ Deprecation Notices
   #. Rename ``config/arm/arm64_octeontx2_linux_gcc`` as ``config/arm/arm64_cn9k_linux_gcc``
 
   Last two actions are to align naming convention as cnxk scheme.
+
+* bus: during devices probing, the ``device->numa_node`` field will be
+  set to SOCKET_ID_ANY when the bus is not able to associate a NUMA node
+  to the device. Some bus drivers like PCI currently defaults to 0 in
+  that case, which can be a problem if this NUMA socket is not used.
+  The behavior will change starting from v22.03.