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-rw-r--r--include/asm-x86/desc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h
index e9356a85202..e17581ad882 100644
--- a/include/asm-x86/desc.h
+++ b/include/asm-x86/desc.h
@@ -71,6 +71,12 @@ static inline void pack_gate(gate_desc *gate, unsigned char type,
#endif
+static inline int desc_empty(const void *ptr)
+{
+ const u32 *desc = ptr;
+ return !(desc[0] | desc[1]);
+}
+
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else