D33725.diff
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	diff --git a/sys/vm/vm_extern.h b/sys/vm/vm_extern.h
	--- a/sys/vm/vm_extern.h
	+++ b/sys/vm/vm_extern.h
	@@ -140,6 +140,11 @@
	static inline bool
	vm_addr_align_ok(vm_paddr_t pa, u_long alignment)
	{
	+#ifdef INVARIANTS
	+ if (!powerof2(alignment))
	+ panic("%s: alignment is not a power of 2: %#lx",
	+ __func__, alignment);
	+#endif
	return ((pa & (alignment - 1)) == 0);
	}

	@@ -150,6 +155,11 @@
	static inline bool
	vm_addr_bound_ok(vm_paddr_t pa, vm_paddr_t size, vm_paddr_t boundary)
	{
	+#ifdef INVARIANTS
	+ if (!powerof2(boundary))
	+ panic("%s: boundary is not a power of 2: %#jx",
	+ __func__, (uintmax_t)boundary);
	+#endif
	return (((pa ^ (pa + size - 1)) & -boundary) == 0);
	}