Index: sys/dev/acpica/acpi_resource.c
===================================================================
--- sys/dev/acpica/acpi_resource.c
+++ sys/dev/acpica/acpi_resource.c
@@ -602,10 +602,6 @@
 
     if (cp == NULL)
 	return;
-
-    while (bus_get_resource_start(dev, SYS_RES_MEMORY, cp->ar_nmem))
-	cp->ar_nmem++;
-
     bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length);
 }
 
Index: sys/dev/pci/pci_host_generic.c
===================================================================
--- sys/dev/pci/pci_host_generic.c
+++ sys/dev/pci/pci_host_generic.c
@@ -107,7 +107,7 @@
 		return (error);
 
 	rid = 0;
-	sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE | RF_SHAREABLE);
+	sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
 	if (sc->res == NULL) {
 		device_printf(dev, "could not map memory.\n");
 		return (ENXIO);