x86: use get_bios_ebda()

Use get_bios_ebda().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 993c76773256..d31d6b72d60d 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -22,6 +22,7 @@
 #include <asm/sections.h>
 #include <asm/kdebug.h>
 #include <asm/e820.h>
+#include <asm/bios_ebda.h>
 
 static void __init zap_identity_mappings(void)
 {
@@ -49,7 +50,6 @@ static void __init copy_bootdata(char *real_mode_data)
         }
 }
 
-#define BIOS_EBDA_SEGMENT 0x40E
 #define BIOS_LOWMEM_KILOBYTES 0x413
 
 /*
@@ -80,8 +80,7 @@ static void __init reserve_ebda_region(void)
         lowmem <<= 10;
 
         /* start of EBDA area */
-        ebda_addr = *(unsigned short *)__va(BIOS_EBDA_SEGMENT);
-        ebda_addr <<= 4;
+        ebda_addr = get_bios_ebda();
 
         /* Fixup: bios puts an EBDA in the top 64K segment */
         /* of conventional memory, but does not adjust lowmem. */