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(-)
--
2.21.3
