D18321.id54754.diff
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D18321.id54754.diff
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	Index: head/sys/riscv/riscv/pmap.c
	===================================================================
	--- head/sys/riscv/riscv/pmap.c
	+++ head/sys/riscv/riscv/pmap.c
	@@ -4438,3 +4438,40 @@

	return (mode >= VM_MEMATTR_DEVICE && mode <= VM_MEMATTR_WRITE_BACK);
	}
	+
	+bool
	+pmap_get_tables(pmap_t pmap, vm_offset_t va, pd_entry_t l1, pd_entry_t l2,
	+ pt_entry_t **l3)
	+{
	+ pd_entry_t l1p, l2p;
	+
	+ /* Get l1 directory entry. */
	+ l1p = pmap_l1(pmap, va);
	+ *l1 = l1p;
	+
	+ if (l1p == NULL \|\| (pmap_load(l1p) & PTE_V) == 0)
	+ return (false);
	+
	+ if ((pmap_load(l1p) & PTE_RX) != 0) {
	+ *l2 = NULL;
	+ *l3 = NULL;
	+ return (true);
	+ }
	+
	+ /* Get l2 directory entry. */
	+ l2p = pmap_l1_to_l2(l1p, va);
	+ *l2 = l2p;
	+
	+ if (l2p == NULL \|\| (pmap_load(l2p) & PTE_V) == 0)
	+ return (false);
	+
	+ if ((pmap_load(l2p) & PTE_RX) != 0) {
	+ *l3 = NULL;
	+ return (true);
	+ }
	+
	+ /* Get l3 page table entry. */
	+ *l3 = pmap_l2_to_l3(l2p, va);
	+
	+ return (true);
	+}