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, 7 deletions

diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index 11b806c7ed94..4397235c2e30 100644
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/arch/x86/mach-voyager/voyager_smp.c
@@ -520,13 +520,6 @@ static void __init do_boot_cpu(__u8 cpu)
             & ~(voyager_extended_vic_processors
                 & voyager_allowed_boot_processors);
 
-        /* This is an area in head.S which was used to set up the
-         * initial kernel stack.  We need to alter this to give the
-         * booting CPU a new stack (taken from its idle process) */
-        extern struct {
-                __u8 *sp;
-                unsigned short ss;
-        } stack_start;
         /* This is the format of the CPI IDT gate (in real mode) which
          * we're hijacking to boot the CPU */
         union IDTFormat {