Index: pmap.c
===================================================================
RCS file: /home/netbsd/src/sys/arch/aarch64/aarch64/pmap.c,v
retrieving revision 1.79
diff -p -u -r1.79 pmap.c
--- pmap.c	24 Jun 2020 08:27:47 -0000	1.79
+++ pmap.c	24 Jun 2020 19:22:34 -0000
@@ -448,7 +448,7 @@ pmap_bootstrap(vaddr_t vstart, vaddr_t v
 	UVMHIST_FUNC(__func__);
 	UVMHIST_CALLED(pmaphist);
 
-#if 0
+#if 1
 	/* uvmexp.ncolors = icachesize / icacheways / PAGE_SIZE; */
 	uvmexp.ncolors = aarch64_cache_vindexsize / PAGE_SIZE;
 #endif
@@ -947,10 +947,15 @@ pmap_icache_sync_range(pmap_t pm, vaddr_
 void
 pmap_procwr(struct proc *p, vaddr_t va, int len)
 {
+	paddr_t pa;
 
-	/* We only need to do anything if it is the current process. */
-	if (p == curproc)
-		cpu_icache_sync_range(va, len);
+	if (p != curproc) {
+		struct pmap *pm = p->p_vmspace->vm_map.pmap;
+		if (!pmap_extract(pm, va, &pa))
+			return;
+		va = AARCH64_PA_TO_KVA(pa);
+	}
+	cpu_icache_sync_range(va, len);
 }
 
 static pt_entry_t