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| author | Liu Jingqi | 2019-12-13 02:19:25 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2020-01-05 13:03:03 +0100 |
| commit | e6f123c3b81241be33f1b763d0ff8b36d1ae9c1e (patch) | |
| tree | cd526e4488255affe162f4727587579847b59857 /hw/i386/acpi-build.c | |
| parent | numa: Extend CLI to provide memory side cache information (diff) | |
| download | qemu-e6f123c3b81241be33f1b763d0ff8b36d1ae9c1e.tar.gz qemu-e6f123c3b81241be33f1b763d0ff8b36d1ae9c1e.tar.xz qemu-e6f123c3b81241be33f1b763d0ff8b36d1ae9c1e.zip | |
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>
Diffstat (limited to 'hw/i386/acpi-build.c')
| -rw-r--r-- | hw/i386/acpi-build.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 7b8da62d41..e25df838f0 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -68,6 +68,7 @@ #include "hw/i386/intel_iommu.h" #include "hw/acpi/ipmi.h" +#include "hw/acpi/hmat.h" /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows @@ -2835,6 +2836,10 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) acpi_add_table(table_offsets, tables_blob); build_slit(tables_blob, tables->linker, machine); } + if (machine->numa_state->hmat_enabled) { + acpi_add_table(table_offsets, tables_blob); + build_hmat(tables_blob, tables->linker, machine->numa_state); + } } if (acpi_get_mcfg(&mcfg)) { acpi_add_table(table_offsets, tables_blob); |