x86/common.c: Make have_cpuid_p() a global function

Remove static declaration in have_cpuid_p() to make it a global function. The
function will be called in early loading microcode.

Signed-off-by: Fenghua Yu <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: H. Peter Anvin <[e-mail]>

arch/x86/include/asm/processor.h

···
 extern void detect_extended_topology(struct cpuinfo_x86 *c);
 extern void detect_ht(struct cpuinfo_x86 *c);
 
+#ifdef CONFIG_X86_32
+extern int have_cpuid_p(void);
+#else
+static inline int have_cpuid_p(void)
+{
+	return 1;
+}
+#endif
 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
 				unsigned int *ecx, unsigned int *edx)
 {

arch/x86/kernel/cpu/common.c

···
 #include <asm/mce.h>
 #include <asm/msr.h>
 #include <asm/pat.h>
+#include <asm/microcode.h>
+#include <asm/microcode_intel.h>
 
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/uv/uv.h>
···
 }
 
 /* Probe for the CPUID instruction */
-static int __cpuinit have_cpuid_p(void)
+int __cpuinit have_cpuid_p(void)
 {
 	return flag_is_changeable_p(X86_EFLAGS_ID);
 }
···
 __setup("serialnumber", x86_serial_nr_setup);
 #else
 static inline int flag_is_changeable_p(u32 flag)
-{
-	return 1;
-}
-/* Probe for the CPUID instruction */
-static inline int have_cpuid_p(void)
 {
 	return 1;
 }