Index: head/sys/amd64/amd64/machdep.c
===================================================================
--- head/sys/amd64/amd64/machdep.c
+++ head/sys/amd64/amd64/machdep.c
@@ -101,6 +101,7 @@
 #include <vm/vm_object.h>
 #include <vm/vm_pager.h>
 #include <vm/vm_param.h>
+#include <vm/vm_phys.h>
 
 #ifdef DDB
 #ifndef KDB
@@ -1226,6 +1227,12 @@
 	pt_entry_t *pte;
 	quad_t dcons_addr, dcons_size;
 	int page_counter;
+
+	/*
+	 * Tell the physical memory allocator about pages used to store
+	 * the kernel and preloaded data.  See kmem_bootstrap_free().
+	 */
+	vm_phys_add_seg((vm_paddr_t)kernphys, trunc_page(first));
 
 	bzero(physmap, sizeof(physmap));
 	physmap_idx = 0;
Index: head/sys/i386/i386/machdep.c
===================================================================
--- head/sys/i386/i386/machdep.c
+++ head/sys/i386/i386/machdep.c
@@ -101,6 +101,7 @@
 #include <vm/vm_object.h>
 #include <vm/vm_pager.h>
 #include <vm/vm_param.h>
+#include <vm/vm_phys.h>
 
 #ifdef DDB
 #ifndef KDB
@@ -1832,6 +1833,12 @@
 	bzero(&vmf, sizeof(vmf));
 	bzero(physmap, sizeof(physmap));
 	basemem = 0;
+
+	/*
+	 * Tell the physical memory allocator about pages used to store
+	 * the kernel and preloaded data.  See kmem_bootstrap_free().
+	 */
+	vm_phys_add_seg((vm_paddr_t)KERNLOAD, trunc_page(first));
 
 	/*
 	 * Check if the loader supplied an SMAP memory map.  If so,
Index: head/sys/kern/subr_module.c
===================================================================
--- head/sys/kern/subr_module.c
+++ head/sys/kern/subr_module.c
@@ -33,6 +33,9 @@
 #include <sys/systm.h>
 #include <sys/linker.h>
 
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+
 /*
  * Preloaded module support
  */
@@ -204,29 +207,42 @@
 void
 preload_delete_name(const char *name)
 {
-    caddr_t	curp;
-    uint32_t	*hdr;
+    caddr_t	addr, curp;
+    uint32_t	*hdr, sz;
     int		next;
     int		clearing;
+
+    addr = 0;
+    sz = 0;
     
     if (preload_metadata != NULL) {
-	
+
 	clearing = 0;
 	curp = preload_metadata;
 	for (;;) {
 	    hdr = (uint32_t *)curp;
-	    if (hdr[0] == 0 && hdr[1] == 0)
-		break;
+	    if (hdr[0] == MODINFO_NAME || (hdr[0] == 0 && hdr[1] == 0)) {
+		/* Free memory used to store the file. */
+		if (addr != 0 && sz != 0)
+		    kmem_bootstrap_free((vm_offset_t)addr, sz);
+		addr = 0;
+		sz = 0;
 
-	    /* Search for a MODINFO_NAME field */
-	    if (hdr[0] == MODINFO_NAME) {
+		if (hdr[0] == 0)
+		    break;
 		if (!strcmp(name, curp + sizeof(uint32_t) * 2))
 		    clearing = 1;	/* got it, start clearing */
-		else if (clearing)
+		else if (clearing) {
 		    clearing = 0;	/* at next one now.. better stop */
+		}
 	    }
-	    if (clearing)
+	    if (clearing) {
+		if (hdr[0] == MODINFO_ADDR)
+		    addr = *(caddr_t *)(curp + sizeof(uint32_t) * 2);
+		else if (hdr[0] == MODINFO_SIZE)
+		    sz = *(uint32_t *)(curp + sizeof(uint32_t) * 2);
 		hdr[0] = MODINFO_EMPTY;
+	    }
 
 	    /* skip to next field */
 	    next = sizeof(uint32_t) * 2 + hdr[1];
Index: head/sys/vm/vm_extern.h
===================================================================
--- head/sys/vm/vm_extern.h
+++ head/sys/vm/vm_extern.h
@@ -75,6 +75,7 @@
 void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
 
 /* Bootstrapping. */
+void kmem_bootstrap_free(vm_offset_t, vm_size_t);
 vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
     boolean_t);
 void kmem_init(vm_offset_t, vm_offset_t);
Index: head/sys/vm/vm_kern.c
===================================================================
--- head/sys/vm/vm_kern.c
+++ head/sys/vm/vm_kern.c
@@ -688,6 +688,38 @@
 	vm_map_unlock(m);
 }
 
+/*
+ *	kmem_bootstrap_free:
+ *
+ *	Free pages backing preloaded data (e.g., kernel modules) to the
+ *	system.  Currently only supported on platforms that create a
+ *	vm_phys segment for preloaded data.
+ */
+void
+kmem_bootstrap_free(vm_offset_t start, vm_size_t size)
+{
+#if defined(__i386__) || defined(__amd64__)
+	struct vm_domain *vmd;
+	vm_offset_t end;
+	vm_paddr_t pa;
+	vm_page_t m;
+
+	end = trunc_page(start + size);
+	start = round_page(start);
+
+	(void)vm_map_remove(kernel_map, start, end);
+	for (; start < end; start += PAGE_SIZE) {
+		pa = pmap_kextract(start);
+		m = PHYS_TO_VM_PAGE(pa);
+
+		vmd = vm_pagequeue_domain(m);
+		vm_domain_free_lock(vmd);
+		vm_phys_free_pages(m, 0);
+		vm_domain_free_unlock(vmd);
+	}
+#endif
+}
+
 #ifdef DIAGNOSTIC
 /*
  * Allow userspace to directly trigger the VM drain routine for testing