i386: Disable vdso by default when CONFIG_PARAVIRT is enabled

They don't work together and this way even glibc still works.

Signed-off-by: Andi Kleen <ak@suse.de>

---
 arch/i386/kernel/sysenter.c |    4 ++++
 1 files changed, 4 insertions(+)

Index: linux/arch/i386/kernel/sysenter.c
===================================================================
--- linux.orig/arch/i386/kernel/sysenter.c
+++ linux/arch/i386/kernel/sysenter.c
@@ -27,7 +27,11 @@
  * Should the kernel map a VDSO page into processes and pass its
  * address down to glibc upon exec()?
  */
+#ifdef CONFIG_PARAVIRT
+unsigned int __read_mostly vdso_enabled = 0;
+#else
 unsigned int __read_mostly vdso_enabled = 1;
+#endif
 
 EXPORT_SYMBOL_GPL(vdso_enabled);