parisc: Fix kernel memory layout regarding position of __gp

Architecturally we need to keep __gp below 0x1000000.

But because of ftrace and tracepoint support, the RO_DATA_SECTION now gets much
bigger than it was before. By moving the linkage tables before RO_DATA_SECTION
we can avoid that __gp gets positioned at a too high address.

Cc: stable@vger.kernel.org # 4.4+
Signed-off-by: Helge Deller <deller@gmx.de>

1 files changed, 5 insertions, 2 deletions

diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index b37787dbe775..9a44e92b65e2 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -90,8 +90,9 @@ SECTIONS
         /* Start of data section */
         _sdata = .;
 
-        RO_DATA_SECTION(8)
-
+        /* Architecturally we need to keep __gp below 0x1000000 and thus
+         * in front of RO_DATA_SECTION() which stores lots of tracepoint
+         * and ftrace symbols. */
 #ifdef CONFIG_64BIT
         . = ALIGN(16);
         /* Linkage tables */
@@ -106,6 +107,8 @@ SECTIONS
         }
 #endif
 
+        RO_DATA_SECTION(8)
+
         /* unwind info */
         .PARISC.unwind : {
                 __start___unwind = .;