sh: Initial vsyscall page support.

This implements initial support for the vsyscall page on SH.
At the moment we leave it configurable due to having nommu
to support from the same code base. We hook it up for the
signal trampoline return at present, with more to be added
later, once uClibc catches up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index ad182b31d846..7154d1ce9785 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -286,6 +286,9 @@ void __init mem_init(void)
                 initsize >> 10);
 
         p3_cache_init();
+
+        /* Initialize the vDSO */
+        vsyscall_init();
 }
 
 void free_initmem(void)