x86: fix missing include for vsyscall

 > Maybe I just picked a bad time to try, but...
 > 
 > arch/x86/kernel/alternative.c: In function 'apply_alternatives':
 > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_START' undeclared (first use in this function)
 > arch/x86/kernel/alternative.c:191: error: (Each undeclared identifier is reported only once
 > arch/x86/kernel/alternative.c:191: error: for each function it appears in.)
 > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_END' undeclared (first use in this function)
 > make[1]: *** [arch/x86/kernel/alternative.o] Error 1
 > make: *** [arch/x86/kernel] Error 2

Try this.

Include missing header for vsyscall.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index bd72d94e713e..11b03d3c6fda 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -10,6 +10,7 @@
 #include <asm/pgtable.h>
 #include <asm/mce.h>
 #include <asm/nmi.h>
+#include <asm/vsyscall.h>
 
 #define MAX_PATCH_LEN (255-1)