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CONFIG_OCXL: OpenCAPI coherent accelerator support

General informations

The Linux kernel configuration item CONFIG_OCXL:

Help text

Select this option to enable the ocxl driver for Open Coherent Accelerator Processor Interface (OpenCAPI) devices.

OpenCAPI allows FPGA and ASIC accelerators to be coherently attached to a CPU over an OpenCAPI link.

The ocxl driver enables userspace programs to access these accelerators through devices in /dev/ocxl/.

For more information, see

This is not to be confused with the support for IBM CAPI accelerators (CXL), which are PCI-based instead of a dedicated OpenCAPI link, and don't follow the same protocol.

If unsure, say N.



Numeric ID (from LKDDb) and names (from pci.ids) of recognized devices:


Raw data from LKDDb:


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