Start wire_count for EPT pde pages at 1.

Corrects an off-by-one error that results in EPT pte's not being
removed properly.

ok mlarkin@

diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c
index f8c4ace..413a69c 100644 (file)
--- a/sys/arch/amd64/amd64/pmap.c
+++ b/sys/arch/amd64/amd64/pmap.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap.c,v 1.170 2024/07/21 19:41:31 bluhm Exp $        */
+/*     $OpenBSD: pmap.c,v 1.171 2024/08/08 15:57:22 dv Exp $   */
 /*     $NetBSD: pmap.c,v 1.3 2003/05/08 18:13:13 thorpej Exp $ */
 
 /*
@@ -2655,6 +2655,7 @@ pmap_enter_ept(struct pmap *pmap, paddr_t gpa, paddr_t hpa, vm_prot_t prot)
                }
                atomic_clearbits_int(&ptp->pg_flags, PG_BUSY);
 
+               ptp->wire_count = 1;
                pptp->wire_count++;
 
                npa = VM_PAGE_TO_PHYS(ptp);