powerpc: discard .exit.data at runtime

.exit.text is discarded at run time and there are some references from
that to .exit.data, so we need to discard .exit.data at run time as well.

Fixes these errors:

`.exit.data' referenced in section `.exit.text' of drivers/built-in.o: defined in discarded section `.exit.data' of drivers/built-in.o
`.exit.data' referenced in section `.exit.text' of drivers/built-in.o: defined in discarded section `.exit.data' of drivers/built-in.o

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 1db685104ffc2b298375c9062590ae1c2f811db9..d41fd0af89807c5b3b5bb4e3e713bd09d4b94eaf 100644 (file)
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -183,6 +183,12 @@ SECTIONS
                *(.rela*)
        }
 #endif
+       /* .exit.data is discarded at runtime, not link time,
+        * to deal with references from .exit.text
+        */
+       .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
+               EXIT_DATA
+       }
 
        /* freed after init ends here */
        . = ALIGN(PAGE_SIZE);