MSR_PR_LG         161 arch/powerpc/include/asm/ptrace.h #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
MSR_PR_LG         100 arch/powerpc/include/asm/reg.h #define MSR_PR		__MASK(MSR_PR_LG)	/* Problem State / Privilege Level */