CONFIG_CXL_ACPI: CXL ACPI: Platform Support

General informations

The Linux kernel configuration item CONFIG_CXL_ACPI:

• prompt: CXL ACPI: Platform Support
• type: tristate
• depends on: ( CONFIG_ACPI ) && ( CONFIG_ACPI_NUMA )
• defined in drivers/cxl/Kconfig
• found in Linux kernels: 5.14–5.19, 6.0–6.12
• modules built: cxl_acpi

Help text

Enable support for host managed device memory (HDM) resources published by a platform's ACPI CXL memory layout description. See Chapter 9.14.1 CXL Early Discovery Table (CEDT) in the CXL 2.0 specification, and CXL Fixed Memory Window Structures (CEDT.CFMWS) (https://www.computeexpresslink.org/spec-landing). The CXL core consumes these resource to publish the root of a cxl_port decode hierarchy to map regions that represent System RAM, or Persistent Memory regions to be managed by LIBNVDIMM.

If unsure say 'm'.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb acpi "ACPI0017" : CONFIG_CXL_ACPI : drivers/cxl/acpi.c # in 5.19, 6.0–6.12
• lkddb acpi "ACPI0017" : CONFIG_CXL_ACPI CONFIG_CXL_BUS : drivers/cxl/acpi.c # in 5.14–5.18, 5.18+HEAD
• lkddb module cxl_acpi CONFIG_CXL_ACPI : drivers/cxl/Kconfig : "CXL ACPI: Platform Support" # in 5.14–5.19, 6.0–6.12
• lkddb platform "" : CONFIG_CXL_ACPI : drivers/cxl/acpi.c # in 5.19, 6.0–6.12
• lkddb platform "" : CONFIG_CXL_ACPI CONFIG_CXL_BUS : drivers/cxl/acpi.c # in 5.14–5.18, 5.18+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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