CPUID_EXT_MMFR3    21 arch/arm/include/asm/cputype.h #define CPUID_EXT_MMFR3	0x5c
CPUID_EXT_MMFR3    36 arch/arm/include/asm/cputype.h #define CPUID_EXT_MMFR3	"c1, 7"