const internal/runtime/gc.PageSize

5 uses

	internal/runtime/gc (current package)
		malloc.go#L49: 	PageSize = 1 << PageShift
		scan.go#L15: type PtrMask [PageSize / goarch.PtrSize / (goarch.PtrSize * 8)]uintptr

	runtime
		mgc.go#L722: 			p.gcw.ptrBuf = (*[gc.PageSize / goarch.PtrSize]uintptr)(persistentalloc(gc.PageSize, goarch.PtrSize, &memstats.gcMiscSys))
		mheap.go#L1792: 	span.limit = base + npages*gc.PageSize // see go.dev/issue/74288; adjusted later for heap spans