In order to apply pmap_demote_pde() to a page directory entry (PDE) from the direct map, the PDE must have PG_M and PG_A preset.
In order to apply pmap_demote_pde() to a page directory entry (PDE) from the
direct map, the PDE must have PG_M and PG_A preset.

Noticed by: Magesh Dhasayyan

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