[IA64] xen_domu_defconfig: fix build issues/warnings

- drivers/xen/events.c did not compile
- xen_setup_hook caused a modpost section warning
- the use of u64 (instead of unsigned long long) together with a %llu
  in drivers/xen/balloon.c caused a compiler warning

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/include/asm/idle.h

@@ -0,0 +1,7 @@
+#ifndef _ASM_IA64_IDLE_H
+#define _ASM_IA64_IDLE_H
+
+static inline void enter_idle(void) { }
+static inline void exit_idle(void) { }
+
+#endif /* _ASM_IA64_IDLE_H */

arch/ia64/include/asm/xen/events.h

@@ -36,14 +36,9 @@ static inline int xen_irqs_disabled(struct pt_regs *regs)
 	return !(ia64_psr(regs)->i);
 }
 
-static inline void xen_do_IRQ(int irq, struct pt_regs *regs)
+static inline void handle_irq(int irq, struct pt_regs *regs)
 {
-	struct pt_regs *old_regs;
-	old_regs = set_irq_regs(regs);
-	irq_enter();
 	__do_IRQ(irq);
-	irq_exit();
-	set_irq_regs(old_regs);
 }
 #define irq_ctx_init(cpu)	do { } while (0)
 

arch/ia64/xen/xensetup.S

@@ -54,8 +54,6 @@ END(startup_xen)
 
 #define isBP	p3	// are we the Bootstrap Processor?
 
-	.text
-
 GLOBAL_ENTRY(xen_setup_hook)
 	mov r8=XEN_PV_DOMAIN_ASM
 (isBP)	movl r9=xen_domain_type;;

drivers/xen/balloon.c

@@ -513,7 +513,8 @@ static ssize_t show_target(struct sys_device *dev, struct sysdev_attribute *attr
 			      char *buf)
 {
 	return sprintf(buf, "%llu\n",
-		       (u64)balloon_stats.target_pages << PAGE_SHIFT);
+		       (unsigned long long)balloon_stats.target_pages
+		       << PAGE_SHIFT);
 }
 
 static ssize_t store_target(struct sys_device *dev,