diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 37587bcf9b86..3fb528615ca3 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -413,7 +413,7 @@ int invpcid_works = 0;
 SYSCTL_INT(_vm_pmap, OID_AUTO, invpcid_works, CTLFLAG_RD, &invpcid_works, 0,
     "Is the invpcid instruction available ?");
 
-int pti = 0;
+int __read_frequently pti = 0;
 SYSCTL_INT(_vm_pmap, OID_AUTO, pti, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
     &pti, 0,
     "Page Table Isolation enabled");