x86, xsave: Make init_xstate_buf static

The pointer is only used in xsave.c. Making it static.
Signed-off-by: Robert Richter <robert.richter@amd.com>
LKML-Reference: <1279731838-1522-5-git-send-email-robert.richter@amd.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/include/asm/xsave.h

@@ -27,7 +27,6 @@
 
 extern unsigned int xstate_size;
 extern u64 pcntxt_mask;
-extern struct xsave_struct *init_xstate_buf;
 extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
 
 extern void xsave_init(void);

arch/x86/kernel/xsave.c

@@ -16,6 +16,11 @@
  */
 u64 pcntxt_mask;
 
+/*
+ * Represents init state for the supported extended state.
+ */
+static struct xsave_struct *init_xstate_buf;
+
 struct _fpx_sw_bytes fx_sw_reserved;
 #ifdef CONFIG_IA32_EMULATION
 struct _fpx_sw_bytes fx_sw_reserved_ia32;
@@ -348,11 +353,6 @@ static void prepare_fx_sw_frame(void)
 #endif
 }
 
-/*
- * Represents init state for the supported extended state.
- */
-struct xsave_struct *init_xstate_buf;
-
 #ifdef CONFIG_X86_64
 unsigned int sig_xstate_size = sizeof(struct _fpstate);
 #endif