[PATCH v2 6/8] asm-generic: introduce .text.fixup input section

Ard Biesheuvel ard.biesheuvel at linaro.org
Fri Mar 13 05:07:30 PDT 2015

This introduces a new .text.fixup input section that gets emitted
together with the .text section for each input object file.

Note that


is not the same as

  *(.text .text.fixup)

and we are looking for the latter, to ensure that fixup snippets that
are assembled into a separate section in the object file do not end
up out of range for the relative branch instructions it contains if
the .text section itself grows very large.

This helps prevent linker failures on large ARM kernels.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
 include/asm-generic/vmlinux.lds.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index ac78910d7416..463231d5bfc7 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -401,7 +401,7 @@
 #define TEXT_TEXT							\
 		ALIGN_FUNCTION();					\
 		*(.text.hot)						\
-		*(.text)						\
+		*(.text .text.fixup)					\
 		*(.ref.text)						\
 	MEM_KEEP(init.text)						\
 	MEM_KEEP(exit.text)						\

More information about the linux-arm-kernel mailing list