[PATCH] x86_64: interrupt handling fix

- Initialize workmask correctly on interrupt signal handling

- Readd missing cli's in the interrupt return path.

Signed-off-by: Andi Kleen <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/x86_64/kernel/entry.S

···
 	call syscall_trace_leave
 	popq %rdi
 	andl $~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edi
+	cli
 	jmp int_restore_rest
 	
 int_signal:
···
 1:	movl $_TIF_NEED_RESCHED,%edi	
 int_restore_rest:
 	RESTORE_REST
+	cli
 	jmp int_with_check
 	CFI_ENDPROC
 		
···
 	call do_notify_resume
 	RESTORE_REST
 	cli
-	GET_THREAD_INFO(%rcx)	
+	GET_THREAD_INFO(%rcx)
+	movl $_TIF_WORK_MASK,%edi
 	jmp retint_check
 
 #ifdef CONFIG_PREEMPT