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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-09-16 18:41:22 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-11-04 16:03:24 -0500 |
| commit | a82fe82916432091ca6fcbd7f357cccf35f6e80d (patch) | |
| tree | b8af39a4b96e69498d863d3cb5674a372722382a /include/hw/acpi | |
| parent | 43eb5e1f73f1b943d952d9776681a51f05ca7aa8 (diff) | |
| download | qemu-a82fe82916432091ca6fcbd7f357cccf35f6e80d.zip qemu-a82fe82916432091ca6fcbd7f357cccf35f6e80d.tar.gz qemu-a82fe82916432091ca6fcbd7f357cccf35f6e80d.tar.bz2 | |
hw/acpi: Generic Port Affinity Structure support
These are very similar to the recently added Generic Initiators
but instead of representing an initiator of memory traffic they
represent an edge point beyond which may lie either targets or
initiators. Here we add these ports such that they may
be targets of hmat_lb records to describe the latency and
bandwidth from host side initiators to the port. A discoverable
mechanism such as UEFI CDAT read from CXL devices and switches
is used to discover the remainder of the path, and the OS can build
up full latency and bandwidth numbers as need for work and data
placement decisions.
Acked-by: Markus Armbruster <armbru@redhat.com>
Tested-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20240916174122.1843197-1-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/acpi')
| -rw-r--r-- | include/hw/acpi/aml-build.h | 3 | ||||
| -rw-r--r-- | include/hw/acpi/pci.h | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index 33eef85..47a4692 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -490,6 +490,9 @@ void build_srat_pci_generic_initiator(GArray *table_data, int node, uint16_t segment, uint8_t bus, uint8_t devfn); +void build_srat_acpi_generic_port(GArray *table_data, uint32_t node, + const char *hid, uint32_t uid); + void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms, const char *oem_id, const char *oem_table_id); diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h index 3015a81..6359d57 100644 --- a/include/hw/acpi/pci.h +++ b/include/hw/acpi/pci.h @@ -41,6 +41,6 @@ Aml *aml_pci_device_dsm(void); void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus); void build_pci_bridge_aml(AcpiDevAmlIf *adev, Aml *scope); -void build_srat_generic_pci_initiator(GArray *table_data); +void build_srat_generic_affinity_structures(GArray *table_data); #endif |