+static inline void pack_tss(tss_desc *tss, unsigned long addr,
+ unsigned size, unsigned entry)
+{
+#ifdef CONFIG_X86_64
+ set_tssldt_descriptor(tss,
+ addr, entry, size);
+#else
+ pack_descriptor(tss, (unsigned long)addr,
+ size,
+ 0x80 | entry, 0);
+#endif
+}
+
+static inline void __set_tss_desc(unsigned cpu, unsigned int entry, void *addr)
+{
+ struct desc_struct *d = get_cpu_gdt_table(cpu);
+ tss_desc tss;
+
+ /*
+ * sizeof(unsigned long) coming from an extra "long" at the end
+ * of the iobitmap. See tss_struct definition in processor.h
+ *
+ * -1? seg base+limit should be pointing to the address of the
+ * last valid byte
+ */
+ pack_tss(&tss, (unsigned long)addr,
+ IO_BITMAP_OFFSET + IO_BITMAP_BYTES + sizeof(unsigned long) - 1,
+ DESC_TSS);
+ write_gdt_entry(d, entry, &tss, DESC_TSS);
+}
+
+#define set_tss_desc(cpu, addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
+