x86: vdso put vars in rodata

This adds a const to the definitions vvar.c makes, so that the vdso_*
variables go into .rodata instead of .data.  This is essentially a
cosmetic change, just giving the section headers in the vDSO file more
pleasing flags. These variables are read-only from the perspective of
the vDSO itself and user mode, even though the contents of the DSO image
were adjusted at boot.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/vdso/vvar.c b/arch/x86/vdso/vvar.c
index 6fc22219a47249bfd8b9f13698103d4efd0eb7c9..1b7e703684f90ae73eb88855425c3ce907a413e0 100644 (file)
--- a/arch/x86/vdso/vvar.c
+++ b/arch/x86/vdso/vvar.c
@@ -8,5 +8,5 @@
 #include <asm/timex.h>
 #include <asm/vgtod.h>
 
-#define VEXTERN(x) typeof (__ ## x) *vdso_ ## x = (void *)VMAGIC;
+#define VEXTERN(x) typeof (__ ## x) *const vdso_ ## x = (void *)VMAGIC;
 #include "vextern.h"