diff --git a/sys/amd64/include/vmm.h b/sys/amd64/include/vmm.h
--- a/sys/amd64/include/vmm.h
+++ b/sys/amd64/include/vmm.h
@@ -243,7 +243,8 @@
 int vm_mmap_memseg(struct vm *vm, vm_paddr_t gpa, int segid, vm_ooffset_t off,
     size_t len, int prot, int flags);
 int vm_munmap_memseg(struct vm *vm, vm_paddr_t gpa, size_t len);
-int vm_alloc_memseg(struct vm *vm, int ident, size_t len, bool sysmem);
+int vm_alloc_memseg(struct vm *vm, int ident, size_t len, int host_domain,
+    bool sysmem);
 void vm_free_memseg(struct vm *vm, int ident);
 int vm_map_mmio(struct vm *vm, vm_paddr_t gpa, size_t len, vm_paddr_t hpa);
 int vm_unmap_mmio(struct vm *vm, vm_paddr_t gpa, size_t len);
diff --git a/sys/amd64/include/vmm_dev.h b/sys/amd64/include/vmm_dev.h
--- a/sys/amd64/include/vmm_dev.h
+++ b/sys/amd64/include/vmm_dev.h
@@ -51,11 +51,30 @@
 	vm_paddr_t	gpa;
 	size_t		len;
 };
-
+/* Maximum number of NUMA domains in a guest. */
+#define VM_MAXMEMDOM 8
+#define VM_MAXSYSMEM VM_MAXMEMDOM
+
+/*
+ * Identifiers for memory segments.
+ * Each guest NUMA domain is represented by a single system
+ * memory segment from [VM_SYSMEM, VM_MAXSYSMEM).
+ * The remaining identifiers can be used to create devmem segments.
+ */
+enum {
+        VM_SYSMEM,
+        VM_BOOTROM = VM_MAXSYSMEM,
+        VM_FRAMEBUFFER,
+        VM_PCIROM,
+        VM_MEMSEG_END
+};
+/* Passing this value to vm_alloc_memseg ... */
+#define VM_MEMSEG_ANYDOMAIN (-1)
 #define	VM_MEMSEG_NAME(m)	((m)->name[0] != '\0' ? (m)->name : NULL)
 struct vm_memseg {
 	int		segid;
 	size_t		len;
+	int 		host_domain;
 	char		name[VM_MAX_SUFFIXLEN + 1];
 };
 
diff --git a/sys/amd64/vmm/vmm.c b/sys/amd64/vmm/vmm.c
--- a/sys/amd64/vmm/vmm.c
+++ b/sys/amd64/vmm/vmm.c
@@ -44,6 +44,7 @@
 #include <sys/smp.h>
 #include <sys/sx.h>
 #include <sys/vnode.h>
+#include <sys/domainset.h>
 
 #include <vm/vm.h>
 #include <vm/vm_param.h>
@@ -135,7 +136,7 @@
 	bool	sysmem;
 	struct vm_object *object;
 };
-#define	VM_MAX_MEMSEGS	4
+#define VM_MAX_MEMSEGS VM_MEMSEG_END
 
 struct mem_map {
 	vm_paddr_t	gpa;
@@ -145,7 +146,7 @@
 	int		prot;
 	int		flags;
 };
-#define	VM_MAX_MEMMAPS	8
+#define VM_MAX_MEMMAPS (VM_MAX_MEMSEGS * 2)
 
 /*
  * Initialization:
@@ -806,7 +807,8 @@
 }
 
 int
-vm_alloc_memseg(struct vm *vm, int ident, size_t len, bool sysmem)
+vm_alloc_memseg(struct vm *vm, int ident, size_t len, int host_domain,
+    bool sysmem)
 {
 	struct mem_seg *seg;
 	vm_object_t obj;
@@ -818,6 +820,9 @@
 
 	if (len == 0 || (len & PAGE_MASK))
 		return (EINVAL);
+	if (host_domain != VM_MEMSEG_ANYDOMAIN &&
+	    (host_domain < 0 || host_domain >= vm_ndomains))
+		return (EINVAL);
 
 	seg = &vm->mem_segs[ident];
 	if (seg->object != NULL) {
@@ -833,6 +838,10 @@
 
 	seg->len = len;
 	seg->object = obj;
+	if (host_domain == VM_MEMSEG_ANYDOMAIN)
+		seg->object->domain.dr_policy = DOMAINSET_IL();
+	else
+		seg->object->domain.dr_policy = DOMAINSET_PREF(host_domain);
 	seg->sysmem = sysmem;
 	return (0);
 }
diff --git a/sys/amd64/vmm/vmm_dev.c b/sys/amd64/vmm/vmm_dev.c
--- a/sys/amd64/vmm/vmm_dev.c
+++ b/sys/amd64/vmm/vmm_dev.c
@@ -356,7 +356,8 @@
 			goto done;
 	}
 
-	error = vm_alloc_memseg(sc->vm, mseg->segid, mseg->len, sysmem);
+	error = vm_alloc_memseg(sc->vm, mseg->segid, mseg->len,
+	    mseg->host_domain, sysmem);
 	if (error)
 		goto done;