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-rw-r--r--arch/x86/kernel/traps.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index b9b67166f9d..fbc097a085c 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -872,6 +872,12 @@ void __init trap_init(void)
set_bit(SYSCALL_VECTOR, used_vectors);
#endif
+#ifdef CONFIG_X86_64
+ BUG_ON(test_bit(VSYSCALL_EMU_VECTOR, used_vectors));
+ set_system_intr_gate(VSYSCALL_EMU_VECTOR, &emulate_vsyscall);
+ set_bit(VSYSCALL_EMU_VECTOR, used_vectors);
+#endif
+
/*
* Should be a barrier for any external CPU state:
*/