x86: move stack_start to smp.h

voyager would conflict with it, but the types are ultimately
compatible. So remove the extern definition from voyager_smp.c
in favour of the common one

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 1eb7b73b45a..ae25927f08c 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -257,12 +257,6 @@ void __devinit initialize_secondary(void)
                 :"m" (current->thread.sp),"m" (current->thread.ip));
 }
 
-/* Static state in head.S used to set up a CPU */
-extern struct {
-        void * sp;
-        unsigned short ss;
-} stack_start;
-
 static inline void __inquire_remote_apic(int apicid)
 {
         unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };