-extern struct page *default_ldt_page;
-extern void load_LDT_nolock(mm_context_t *pc, int cpu);
+static inline void clear_LDT(void)
+{
+ int cpu = get_cpu();
+
+ set_ldt_desc(cpu, &default_ldt[0], 5);
+ load_LDT_desc();
+ put_cpu();
+}
+
+/*
+ * load one particular LDT into the current CPU
+ */
+static inline void load_LDT_nolock(mm_context_t *pc, int cpu)
+{
+ void *segments = pc->ldt;
+ int count = pc->size;
+
+ if (likely(!count)) {
+ segments = &default_ldt[0];
+ count = 5;
+ }
+
+ set_ldt_desc(cpu, segments, count);
+ load_LDT_desc();
+}