var runtime.levelShift

7 uses

	runtime (current package)
		mpagealloc.go#L147: 	return int((addr.a - arenaBaseOffset) >> levelShift[level])
		mpagealloc.go#L153: 	return offAddr{(uintptr(idx) << levelShift[level]) + arenaBaseOffset}
		mpagealloc.go#L170: 	lo = int((base - arenaBaseOffset) >> levelShift[level])
		mpagealloc.go#L171: 	hi = int(((limit-1)-arenaBaseOffset)>>levelShift[level]) + 1
		mpagealloc.go#L827: 		print("runtime: levelShift[level] = ", levelShift[l], ", levelBits[level] = ", levelBits[l], "\n")
		mpagealloc_64bit.go#L48: var levelShift = [summaryLevels]uint{
		mpagealloc_64bit.go#L74: 	for l, shift := range levelShift {