x86, asmlinkage, lguest: Fix C functions used by inline assembler

- Make the C code used by the paravirt stubs visible
- Since they have to be global now, give them a more unique
name.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1382458079-24450-3-git-send-email-andi@firstfloor.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/lguest/boot.c

@@ -233,13 +233,13 @@ static void lguest_end_context_switch(struct task_struct *next)
  * flags word contains all kind of stuff, but in practice Linux only cares
  * about the interrupt flag.  Our "save_flags()" just returns that.
  */
-static unsigned long save_fl(void)
+asmlinkage unsigned long lguest_save_fl(void)
 {
 	return lguest_data.irq_enabled;
 }
 
 /* Interrupts go off... */
-static void irq_disable(void)
+asmlinkage void lguest_irq_disable(void)
 {
 	lguest_data.irq_enabled = 0;
 }
@@ -253,8 +253,8 @@ static void irq_disable(void)
  * PV_CALLEE_SAVE_REGS_THUNK(), which pushes %eax onto the stack, calls the
  * C function, then restores it.
  */
-PV_CALLEE_SAVE_REGS_THUNK(save_fl);
-PV_CALLEE_SAVE_REGS_THUNK(irq_disable);
+PV_CALLEE_SAVE_REGS_THUNK(lguest_save_fl);
+PV_CALLEE_SAVE_REGS_THUNK(lguest_irq_disable);
 /*:*/
 
 /* These are in i386_head.S */
@@ -1291,9 +1291,9 @@ __init void lguest_init(void)
 	 */
 
 	/* Interrupt-related operations */
-	pv_irq_ops.save_fl = PV_CALLEE_SAVE(save_fl);
+	pv_irq_ops.save_fl = PV_CALLEE_SAVE(lguest_save_fl);
 	pv_irq_ops.restore_fl = __PV_IS_CALLEE_SAVE(lg_restore_fl);
-	pv_irq_ops.irq_disable = PV_CALLEE_SAVE(irq_disable);
+	pv_irq_ops.irq_disable = PV_CALLEE_SAVE(lguest_irq_disable);
 	pv_irq_ops.irq_enable = __PV_IS_CALLEE_SAVE(lg_irq_enable);
 	pv_irq_ops.safe_halt = lguest_safe_halt;