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CONFIG_PPC_ICSWX: Support for PowerPC icswx coprocessor instruction

General informations

The Linux kernel configuration item CONFIG_PPC_ICSWX:

Help text

This option enables kernel support for the PowerPC Initiate Coprocessor Store Word (icswx) coprocessor instruction on POWER7 and POWER8 processors. POWER9 uses new copy/paste instructions to invoke the coprocessor.

This option is only useful if you have a processor that supports the icswx coprocessor instruction. It does not have any effect on processors without the icswx coprocessor instruction.

This option slightly increases kernel memory usage.

If in doubt, say N here.



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