x86: make early printk selectable on 64-bit as well

Enable CONFIG_EMBEDDED to select CONFIG_EARLY_PRINTK on 64-bit as well.

saves ~2K:

   text    data     bss     dec     hex filename
   7290283 3672091 1907848 12870222         c4624e vmlinux.before
   7288373 3671795 1907848 12868016         c459b0 vmlinux.after

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 8b4c35cb519a..1d5a7a361200 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -267,6 +267,7 @@ init_rsp:
 bad_address:
         jmp bad_address
 
+#ifdef CONFIG_EARLY_PRINTK
 .macro early_idt_tramp first, last
         .ifgt \last-\first
         early_idt_tramp \first, \last-1
@@ -281,8 +282,10 @@ early_idt_handlers:
         early_idt_tramp 64, 127
         early_idt_tramp 128, 191
         early_idt_tramp 192, 255
+#endif
 
 ENTRY(early_idt_handler)
+#ifdef CONFIG_EARLY_PRINTK
         cmpl $2,early_recursion_flag(%rip)
         jz  1f
         incl early_recursion_flag(%rip)
@@ -311,8 +314,11 @@ ENTRY(early_idt_handler)
         movq 8(%rsp),%rsi       # get rip again
         call __print_symbol
 #endif
+#endif /* EARLY_PRINTK */
 1:      hlt
         jmp 1b
+
+#ifdef CONFIG_EARLY_PRINTK
 early_recursion_flag:
         .long 0
 
@@ -320,6 +326,7 @@ early_idt_msg:
         .asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n"
 early_idt_ripmsg:
         .asciz "RIP %s\n"
+#endif /* CONFIG_EARLY_PRINTK */
 
 .balign PAGE_SIZE