FIX_BTMAP_BEGIN    35 arch/arm/include/asm/fixmap.h 	FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
FIX_BTMAP_BEGIN    81 arch/arm64/include/asm/fixmap.h 	FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
FIX_BTMAP_BEGIN   134 arch/x86/include/asm/fixmap.h 	FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,