powerpc: export debug registers save function for KVM

KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.

Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Scott Wood <scottwood@freescale.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 3db9d7e39f39..4d42c4de8b9b 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -371,12 +371,13 @@ static void prime_debug_regs(struct thread_struct *thread)
  * debug registers, set the debug registers from the values
  * stored in the new thread.
  */
-static void switch_booke_debug_regs(struct thread_struct *new_thread)
+void switch_booke_debug_regs(struct thread_struct *new_thread)
 {
         if ((current->thread.debug.dbcr0 & DBCR0_IDM)
                 || (new_thread->debug.dbcr0 & DBCR0_IDM))
                         prime_debug_regs(new_thread);
 }
+EXPORT_SYMBOL_GPL(switch_booke_debug_regs);
 #else   /* !CONFIG_PPC_ADV_DEBUG_REGS */
 #ifndef CONFIG_HAVE_HW_BREAKPOINT
 static void set_debug_reg_defaults(struct thread_struct *thread)