D19097.diff
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	Index: head/sys/arm64/arm64/pmap.c
	===================================================================
	--- head/sys/arm64/arm64/pmap.c
	+++ head/sys/arm64/arm64/pmap.c
	@@ -2862,6 +2862,7 @@

	/* Create the new mapping */
	pmap_load_store(pte, newpte);
	+ dsb(ishst);

	critical_exit();
	intr_restore(intr);
	@@ -3281,6 +3282,7 @@
	} else {
	/* New mappig */
	pmap_load_store(l3, new_l3);
	+ dsb(ishst);
	}

	#if VM_NRESERVLEVEL > 0
	@@ -3435,6 +3437,7 @@
	* Map the superpage.
	*/
	(void)pmap_load_store(l2, new_l2);
	+ dsb(ishst);

	atomic_add_long(&pmap_l2_mappings, 1);
	CTR2(KTR_PMAP, "pmap_enter_l2: success for va %#lx in pmap %p",