powerpc: Disable RELOCATABLE for COMPILE_TEST with PPC64

commit fb43e8477ed9006c4f397f904c691a120503038c upstream.

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>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 38f3b7e47ec5efd190018de0d9bba1d2ef5b4011..d5d026b6d237579871dbd756fed7f9b964f70d26 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -395,7 +395,7 @@ config KEXEC
 config CRASH_DUMP
        bool "Build a kdump crash kernel"
        depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
-       select RELOCATABLE if PPC64 || 44x
+       select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x
        select DYNAMIC_MEMSTART if FSL_BOOKE
        help
          Build a kernel suitable for use as a kdump capture kernel.
@@ -985,6 +985,7 @@ 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