x86: Move paravirt banner printout to x86_init_ops

Replace another obscure paravirt magic and move it to
x86_init_ops. Such a hook is also useful for embedded and special
hardware.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/include/asm/paravirt.h

@@ -918,6 +918,8 @@ static inline unsigned long __raw_local_irq_save(void)
 #undef PVOP_VCALL4
 #undef PVOP_CALL4
 
+extern void default_banner(void);
+
 #else  /* __ASSEMBLY__ */
 
 #define _PVSITE(ptype, clobbers, ops, word, algn)	\
@@ -1058,5 +1060,7 @@ static inline unsigned long __raw_local_irq_save(void)
 #endif	/* CONFIG_X86_32 */
 
 #endif /* __ASSEMBLY__ */
-#endif /* CONFIG_PARAVIRT */
+#else  /* CONFIG_PARAVIRT */
+# define default_banner x86_init_noop
+#endif /* !CONFIG_PARAVIRT */
 #endif /* _ASM_X86_PARAVIRT_H */

arch/x86/include/asm/paravirt_types.h

@@ -81,9 +81,6 @@ struct pv_init_ops {
 
 	/* Basic arch-specific setup */
 	void (*post_allocator_init)(void);
-
-	/* Print a banner to identify the environment */
-	void (*banner)(void);
 };
 
 

arch/x86/include/asm/x86_init.h

@@ -59,9 +59,11 @@ struct x86_init_irqs {
 /**
  * struct x86_init_oem - oem platform specific customizing functions
  * @arch_setup:			platform specific architecure setup
+ * @banner:			print a platform specific banner
  */
 struct x86_init_oem {
 	void (*arch_setup)(void);
+	void (*banner)(void);
 };
 
 /**

arch/x86/kernel/paravirt.c

@@ -54,7 +54,7 @@ u64 _paravirt_ident_64(u64 x)
 	return x;
 }
 
-static void __init default_banner(void)
+void __init default_banner(void)
 {
 	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
 	       pv_info.name);
@@ -208,13 +208,6 @@ extern void native_irq_enable_sysexit(void);
 extern void native_usergs_sysret32(void);
 extern void native_usergs_sysret64(void);
 
-static int __init print_banner(void)
-{
-	pv_init_ops.banner();
-	return 0;
-}
-core_initcall(print_banner);
-
 static struct resource reserve_ioports = {
 	.start = 0,
 	.end = IO_SPACE_LIMIT,
@@ -310,7 +303,6 @@ struct pv_info pv_info = {
 
 struct pv_init_ops pv_init_ops = {
 	.patch = native_patch,
-	.banner = default_banner,
 };
 
 struct pv_time_ops pv_time_ops = {

arch/x86/kernel/setup.c

@@ -1012,6 +1012,7 @@ void __init setup_arch(char **cmdline_p)
 	conswitchp = &dummy_con;
 #endif
 #endif
+	x86_init.oem.banner();
 }
 
 #ifdef CONFIG_X86_32

arch/x86/kernel/x86_init.c

@@ -6,6 +6,7 @@
 #include <linux/init.h>
 
 #include <asm/bios_ebda.h>
+#include <asm/paravirt.h>
 #include <asm/mpspec.h>
 #include <asm/setup.h>
 #include <asm/e820.h>
@@ -45,5 +46,6 @@ struct __initdata x86_init_ops x86_init = {
 
 	.oem = {
 		.arch_setup		= x86_init_noop,
+		.banner			= default_banner,
 	},
 };

arch/x86/xen/enlighten.c

@@ -840,7 +840,6 @@ static const struct pv_info xen_info __initdata = {
 static const struct pv_init_ops xen_init_ops __initdata = {
 	.patch = xen_patch,
 
-	.banner = xen_banner,
 	.post_allocator_init = xen_post_allocator_init,
 };
 
@@ -982,6 +981,7 @@ asmlinkage void __init xen_start_kernel(void)
 
 	x86_init.resources.memory_setup = xen_memory_setup;
 	x86_init.oem.arch_setup = xen_arch_setup;
+	x86_init.oem.banner = xen_banner;
 
 #ifdef CONFIG_X86_64
 	/*