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powerpc: Align TOC to 256 bytes 

commit 5e95235ccd upstream.

Recent toolchains force the TOC to be 256 byte aligned. We need
to enforce this alignment in our linker script, otherwise pointers
to our TOC variables (__toc_start, __prom_init_toc_start) could
be incorrect.

If they are bad, we die a few hundred instructions into boot.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anton Blanchard 2015-05-14 14:45:40 +10:00 committed by Greg Kroah-Hartman
parent 67be82e439
commit e28e66f7c5
1 changed files with 1 additions and 0 deletions
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1
arch/powerpc/kernel/vmlinux.lds.S
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@ -213,6 +213,7 @@ SECTIONS
*(.opd)
}
. = ALIGN(256);
.got : AT(ADDR(.got) - LOAD_OFFSET) {
__toc_start = .;
#ifndef CONFIG_RELOCATABLE