Index: usr.bin/procstat/procstat_vm.c
===================================================================
--- usr.bin/procstat/procstat_vm.c	(revision 184429)
+++ usr.bin/procstat/procstat_vm.c	(working copy)
@@ -41,16 +41,17 @@
 procstat_vm(pid_t pid, struct kinfo_proc *kipp __unused)
 {
 	struct kinfo_vmentry *freep, *kve;
-	int error, name[4], ptrwidth;
+	int error, name[4], ptrwidth, offwidth;
 	unsigned int i;
 	const char *str;
 	size_t len;
 
 	ptrwidth = 2*sizeof(void *) + 2;
+	offwidth = 2*sizeof(off_t) + 2;
 	if (!hflag)
-		printf("%5s %*s %*s %3s %4s %4s %3s %3s %2s %-2s %-s\n",
+		printf("%5s %*s %*s %3s %4s %4s %3s %3s %2s %-2s %*s %-s\n",
 		    "PID", ptrwidth, "START", ptrwidth, "END", "PRT", "RES",
-		    "PRES", "REF", "SHD", "FL", "TP", "PATH");
+		    "PRES", "REF", "SHD", "FL", "TP", offwidth, "OFFSET", "PATH");
 
 	name[0] = CTL_KERN;
 	name[1] = KERN_PROC;
@@ -125,6 +126,7 @@
 			break;
 		}
 		printf("%-2s ", str);
+		printf("%#*llx ", offwidth, (unsigned long long)kve->kve_offset);
 		printf("%-s\n", kve->kve_path);
 	}
 	free(freep);
Index: usr.bin/procstat/procstat.1
===================================================================
--- usr.bin/procstat/procstat.1	(revision 184429)
+++ usr.bin/procstat/procstat.1	(working copy)
@@ -293,6 +293,8 @@
 mapping flags
 .It TP
 VM object type
+.It OFFSET
+mapping offset within VM object
 .El
 .Pp
 The following protection flags may be displayed:
Index: sys/kern/kern_proc.c
===================================================================
--- sys/kern/kern_proc.c	(revision 184429)
+++ sys/kern/kern_proc.c	(working copy)
@@ -1451,6 +1451,7 @@
 
 		kve->kve_start = (void*)entry->start;
 		kve->kve_end = (void*)entry->end;
+		kve->kve_offset = (off_t)entry->offset;
 
 		if (entry->protection & VM_PROT_READ)
 			kve->kve_protection |= KVME_PROT_READ;
Index: sys/sys/user.h
===================================================================
--- sys/sys/user.h	(revision 184429)
+++ sys/sys/user.h	(working copy)
@@ -325,7 +325,11 @@
 	int	 kve_ref_count;			/* VM obj ref count. */
 	int	 kve_shadow_count;		/* VM obj shadow count. */
 	char	 kve_path[PATH_MAX];		/* Path to VM obj, if any. */
-	void	*_kve_pspare[8];		/* Space for more stuff. */
+	off_t	 kve_offset;			/* Mapping offset within object */
+	/* Similar hack to struct stat.  See notes there. */
+	unsigned int :(8 / 2) * ((2 * (int)sizeof(void *)) - (int)sizeof(off_t));
+	unsigned int :(8 / 2) * ((2 * (int)sizeof(void *)) - (int)sizeof(off_t));
+	void	*_kve_pspare[6];		/* Space for more stuff. */
 	int	 _kve_ispare[8];		/* Space for more stuff. */
 };