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CONFIG_CPU_LOONGSON3_CPUCFG_EMULATION: Emulate the CPUCFG instruction on older Loongson cores

General informations

The Linux kernel configuration item CONFIG_CPU_LOONGSON3_CPUCFG_EMULATION:

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Loongson-3A R4 and newer have the CPUCFG instruction available for userland to query CPU capabilities, much like CPUID on x86. This option provides emulation of the instruction on older Loongson cores, back to Loongson-3A1000.

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