D49442.1775470266.diff
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D49442.1775470266.diff
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	diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
	--- a/sys/amd64/amd64/pmap.c
	+++ b/sys/amd64/amd64/pmap.c
	@@ -9304,12 +9304,16 @@
	m = PHYS_TO_VM_PAGE(*pte & PG_FRAME);
	vm_page_dirty(m);
	}
	- atomic_clear_long(pte, PG_M \| PG_A);
	- } else if ((*pte & PG_A) != 0)
	- atomic_clear_long(pte, PG_A);
	- else
	+ } else
	goto maybe_invlrng;

	+ /*
	+ * Avoid clearing the accessed bit for wired mappings.
	+ * Superpage demotion assumes that a wired mapping is
	+ * always accessed.
	+ */
	+ atomic_clear_long(pte,
	+ PG_M \| ((*pte & PG_W) == 0 ? PG_A : 0));
	if ((*pte & PG_G) != 0) {
	if (va == va_next)
	va = sva;