[PATCH V2] x86/boot: explicitly place .eh_frame after .rodata

[Ilie Halip <ilie.halip@gmail.com>]

When using GCC as compiler and LLVM's lld as linker, linking
setup.elf fails:
      LD      arch/x86/boot/setup.elf
    ld.lld: error: init sections too big!

This happens because ld.lld has different rules for placing
orphan sections (i.e. sections not mentioned in a linker script)
compared to ld.bfd.

Particularly, in this case, the merged .eh_frame section is
placed before __end_init, which triggers an assert in the script.

Explicitly place this section after .rodata, in accordance with
ld.bfd's behavior.

Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/760
---

Changes in V2:
 * removed wildcard for input sections (.eh_frame* -> .eh_frame)

 arch/x86/boot/setup.ld | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/boot/setup.ld b/arch/x86/boot/setup.ld
index 0149e41d42c2..30ce52635cd0 100644
--- a/arch/x86/boot/setup.ld
+++ b/arch/x86/boot/setup.ld
@@ -25,6 +25,7 @@ SECTIONS
 
 	. = ALIGN(16);
 	.rodata		: { *(.rodata*) }
+	.eh_frame	: { *(.eh_frame) }
 
 	.videocards	: {
 		video_cards = .;
-- 
2.17.1