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The Linux kernel configuration item CONFIG_ERRATA_THEAD_GHOSTWRITE
:
CONFIG_ERRATA_THEAD && CONFIG_RISCV_ISA_XTHEADVECTOR
The T-Head C9xx cores have a vulnerability in the xtheadvector instruction set. When this errata is enabled, the CPUs will be probed to determine if they are vulnerable and disable xtheadvector.
If you don't know what to do here, say "Y".
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