powerpc: Disable RELOCATABLE for COMPILE_TEST with PPC64

powerpc:allmodconfig has been failing for some time with the following
error.

arch/powerpc/kernel/exceptions-64s.S: Assembler messages:
arch/powerpc/kernel/exceptions-64s.S:1312: Error: attempt to move .org backwards
make[1]: *** [arch/powerpc/kernel/head_64.o] Error 1

A number of attempts to fix the problem by moving around code have been
unsuccessful and resulted in failed builds for some configurations and
the discovery of toolchain bugs.

Fix the problem by disabling RELOCATABLE for COMPILE_TEST builds instead.
While this is less than perfect, it avoids substantial code changes
which would otherwise be necessary just to make COMPILE_TEST builds
happy and might have undesired side effects.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index bd6dd6ed3a9f1c30b4ae508057a264348b117b3f..fefe7c8bf05f54725b2edb7acbcc801c95c6431c 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -414,7 +414,7 @@ config KEXEC
 config CRASH_DUMP
        bool "Build a kdump crash kernel"
        depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
-       select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
+       select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
        help
          Build a kernel suitable for use as a kdump capture kernel.
          The same kernel binary can be used as production kernel and dump
@@ -1017,6 +1017,7 @@ endmenu
 if PPC64
 config RELOCATABLE
        bool "Build a relocatable kernel"
+       depends on !COMPILE_TEST
        select NONSTATIC_KERNEL
        help
          This builds a kernel image that is capable of running anywhere