x86: unify TASK_ALIGN definitions

This patch moves the TASK_ALIGN constraints to common header.
The base of it is the same for x86_64 and i386. The only difference
is the presence of vSMP in x86_64. As it's not a worry in i386, we can
safely use the same code for both.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/asm-x86/processor.h

@@ -22,6 +22,14 @@ static inline void *current_text_addr(void)
 	return pc;
 }
 
+#ifdef CONFIG_X86_VSMP
+#define ARCH_MIN_TASKALIGN	(1 << INTERNODE_CACHE_SHIFT)
+#define ARCH_MIN_MMSTRUCT_ALIGN	(1 << INTERNODE_CACHE_SHIFT)
+#else
+#define ARCH_MIN_TASKALIGN	16
+#define ARCH_MIN_MMSTRUCT_ALIGN	0
+#endif
+
 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
 					 unsigned int *ecx, unsigned int *edx)
 {

include/asm-x86/processor_32.h

@@ -174,7 +174,6 @@ typedef struct {
 	unsigned long seg;
 } mm_segment_t;
 
-#define ARCH_MIN_TASKALIGN	16
 
 #define INIT_THREAD  {							\
 	.sp0 = sizeof(init_stack) + (long)&init_stack,			\

include/asm-x86/processor_64.h

@@ -117,14 +117,6 @@ struct orig_ist {
 };
 DECLARE_PER_CPU(struct orig_ist, orig_ist);
 
-#ifdef CONFIG_X86_VSMP
-#define ARCH_MIN_TASKALIGN	(1 << INTERNODE_CACHE_SHIFT)
-#define ARCH_MIN_MMSTRUCT_ALIGN	(1 << INTERNODE_CACHE_SHIFT)
-#else
-#define ARCH_MIN_TASKALIGN	16
-#define ARCH_MIN_MMSTRUCT_ALIGN	0
-#endif
-
 #define INIT_THREAD  { \
 	.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
 }