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authorLiu Jingqi <jingqi.liu@intel.com>2019-12-13 09:19:25 +0800
committerMichael S. Tsirkin <mst@redhat.com>2020-01-05 07:03:03 -0500
commite6f123c3b81241be33f1b763d0ff8b36d1ae9c1e (patch)
treecd526e4488255affe162f4727587579847b59857 /scripts
parentc412a48d4d91e8f8b89aae02de0f44f1f0b729e5 (diff)
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 <armbru@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Daniel Black <daniel@linux.ibm.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Liu Jingqi <jingqi.liu@intel.com> Signed-off-by: Tao Xu <tao3.xu@intel.com> Message-Id: <20191213011929.2520-5-tao3.xu@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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