[v2,0/1] nvdimm: add 'target-node' option

Message

Liu, Jingqi July 19, 2021, 2:01 a.m. UTC

Linux kernel version 5.1 brings in support for the volatile-use of
persistent memory as a hotplugged memory region (KMEM DAX).
When this feature is enabled, persistent memory can be seen as a
separate memory-only NUMA node(s). This newly-added memory can be
selected by its unique NUMA node.

Add 'target-node' option for 'nvdimm' device to indicate this NUMA
node. It can be extended to a new node after all existing NUMA nodes.

Changelog:
    v2:
        - Per Igor's comments, adjust target node error handling,
          and make both 'node' and 'target-node' properties mutually exclusive.
          Create a callback of nvdimm_pre_plug() for checking
          whether the 'target-node' is correct.
    v1:
        - It's the initial version.

Jingqi Liu (1):
  nvdimm: add 'target-node' option

 docs/nvdimm.txt         | 93 +++++++++++++++++++++++++++++++++++++++++
 hw/acpi/nvdimm.c        | 18 ++++----
 hw/i386/acpi-build.c    | 12 +++++-
 hw/i386/pc.c            |  4 ++
 hw/mem/nvdimm.c         | 43 ++++++++++++++++++-
 include/hw/mem/nvdimm.h | 17 +++++++-
 util/nvdimm-utils.c     | 22 ++++++++++
 7 files changed, 198 insertions(+), 11 deletions(-)