The dar (DataaddressRegister) contains the address that the processor tried to access, which then caused a page fault.
dar(数据地址寄存器)包含处理器尝试访问的地址,这一行为将引发页面错误。
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Important registers to look for when debugging through signals are the GPRs, instruction pointer (NIP), machine state register (MSR), trap, dataaddressregister (DAR), and so on.