X86_PG_PTE_PAT
#define _PAGE_PAT X86_PG_PTE_PAT
pat_pte_index[PAT_WRITE_PROTECTED] = X86_PG_PTE_PAT | X86_PG_NC_PWT;
pat_pte_index[PAT_WRITE_COMBINING] = X86_PG_PTE_PAT | X86_PG_NC_PCD;
if (pte & X86_PG_PTE_PAT) {
pte &= ~X86_PG_PTE_PAT;
pmap->pmap_cache_mask_pte = X86_PG_NC_PWT | X86_PG_NC_PCD | X86_PG_PTE_PAT;