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diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c
--- a/sys/kern/kern_proc.c
+++ b/sys/kern/kern_proc.c
@@ -2514,7 +2514,7 @@
vm_offset_t addr;
unsigned int last_timestamp;
int error;
- bool super;
+ bool guard, super;
PROC_LOCK_ASSERT(p, MA_OWNED);
@@ -2584,6 +2584,8 @@
if (entry->eflags & MAP_ENTRY_USER_WIRED)
kve->kve_flags |= KVME_FLAG_USER_WIRED;
+ guard = (entry->eflags & MAP_ENTRY_GUARD) != 0;
+
last_timestamp = map->timestamp;
vm_map_unlock_read(map);
@@ -2620,7 +2622,8 @@
vput(vp);
}
} else {
- kve->kve_type = KVME_TYPE_NONE;
+ kve->kve_type = guard ? KVME_TYPE_GUARD :
+ KVME_TYPE_NONE;
kve->kve_ref_count = 0;
kve->kve_shadow_count = 0;
}
diff --git a/sys/sys/user.h b/sys/sys/user.h
--- a/sys/sys/user.h
+++ b/sys/sys/user.h
@@ -465,6 +465,7 @@
#define KVME_TYPE_DEAD 6
#define KVME_TYPE_SG 7
#define KVME_TYPE_MGTDEVICE 8
+#define KVME_TYPE_GUARD 9
#define KVME_TYPE_UNKNOWN 255
#define KVME_PROT_READ 0x00000001
diff --git a/usr.bin/procstat/procstat.1 b/usr.bin/procstat/procstat.1
--- a/usr.bin/procstat/procstat.1
+++ b/usr.bin/procstat/procstat.1
@@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd November 24, 2020
+.Dd February 13, 2021
.Dt PROCSTAT 1
.Os
.Sh NAME
@@ -674,6 +674,8 @@
swap
.It vn
vnode
+.It gd
+guard (pseudo-type)
.El
.Pp
The following mapping flags may be displayed:
diff --git a/usr.bin/procstat/procstat_vm.c b/usr.bin/procstat/procstat_vm.c
--- a/usr.bin/procstat/procstat_vm.c
+++ b/usr.bin/procstat/procstat_vm.c
@@ -155,6 +155,10 @@
str = "md";
lstr = "managed_device";
break;
+ case KVME_TYPE_GUARD:
+ str = "gd";
+ lstr = "guard";
+ break;
case KVME_TYPE_UNKNOWN:
default:
str = "??";

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