const runtime.gcBitsChunkBytes

4 uses

	runtime (current package)
		mheap.go#L1958: const gcBitsChunkBytes = uintptr(64 << 10)
		mheap.go#L1971: 	bits [gcBitsChunkBytes - gcBitsHeaderBytes]gcBits
		mheap.go#L2100: 		result = (*gcBitsArena)(sysAlloc(gcBitsChunkBytes, &memstats.gcMiscSys))
		mheap.go#L2108: 		memclrNoHeapPointers(unsafe.Pointer(result), gcBitsChunkBytes)