@@ -205,10 +205,11 @@ subject to its memory ranges being exposed through the sysfs memory
hotplug api on memory block boundaries. The implementation relies on
this lack of user-api constraint to allow sub-section sized memory
ranges to be specified to :c:func:`arch_add_memory`, the top-half of
-memory hotplug. Sub-section support allows for `PMD_SIZE` as the minimum
-alignment granularity for :c:func:`devm_memremap_pages`.
+memory hotplug. Sub-section support allows for 2MB as the cross-arch
+common alignment granularity for :c:func:`devm_memremap_pages`.
The users of `ZONE_DEVICE` are:
+
* pmem: Map platform persistent memory to be used as a direct-I/O target
via DAX mappings.
Mike notes that Sphinx needs a newline before the start of a bulleted list, and v10 of the subsection patch set changed the subsection size from an arch-variable 'PMD_SIZE' to a constant 2MB. Cc: Jonathan Corbet <corbet@lwn.net> Reported-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- Hi Andrew, Another small fixup to fold on top of the subsection series. Thanks to Mike for the build test, I also caught that the doc was out of date. Documentation/vm/memory-model.rst | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)