hmat acpi: Build Memory Proximity Domain Attributes Structure(s)

hmat acpi: Build Memory Proximity Domain Attributes Structure(s)

HMAT is defined in ACPI 6.3: 5.2.27 Heterogeneous Memory Attribute Table
(HMAT). The specification references below link:
http://www.uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf

It describes the memory attributes, such as memory side cache
attributes and bandwidth and latency details, related to the
Memory Proximity Domain. The software is
expected to use this information as hint for optimization.

This structure describes Memory Proximity Domain Attributes by memory
subsystem and its associativity with processor proximity domain as well as
hint for memory usage.

In the linux kernel, the codes in drivers/acpi/hmat/hmat.c parse and report
the platform's HMAT tables.

Acked-by: Markus Armbruster <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
Reviewed-by: Daniel Black <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Signed-off-by: Liu Jingqi <[email protected]>
Signed-off-by: Tao Xu <[email protected]>
Message-Id: <20191213011929[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>