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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>
41 lines
544 B
Plaintext
41 lines
544 B
Plaintext
config ACPI
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bool
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config ACPI_X86
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bool
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select ACPI
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select ACPI_NVDIMM
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select ACPI_CPU_HOTPLUG
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select ACPI_MEMORY_HOTPLUG
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select ACPI_HMAT
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config ACPI_X86_ICH
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bool
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select ACPI_X86
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config ACPI_CPU_HOTPLUG
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bool
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config ACPI_MEMORY_HOTPLUG
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bool
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select MEM_DEVICE
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config ACPI_NVDIMM
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bool
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depends on ACPI
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config ACPI_HMAT
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bool
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depends on ACPI
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config ACPI_PCI
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bool
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depends on ACPI && PCI
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config ACPI_VMGENID
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bool
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default y
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depends on PC
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config ACPI_HW_REDUCED
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