From: Greg Kroah-Hartman gregkh@linuxfoundation.org
From: Helge Deller deller@gmx.de
commit 778e45d7720d663811352943dd515b41f6849637 upstream
The kernel test robot reported multiple linkage problems like this:
hppa64-linux-ld: init/main.o(.init.text+0x56c): cannot reach printk init/main.o: in function `unknown_bootoption': (.init.text+0x56c): relocation truncated to fit: R_PARISC_PCREL22F against symbol `printk' defined in .text.unlikely section in kernel/printk/printk.o
There are two ways to solve it: a) Enable the -mlong-call compiler option (CONFIG_MLONGCALLS), b) Add long branch stub support in 64-bit linker.
While b) is the long-term solution, this patch works around the issue by automatically enabling the CONFIG_MLONGCALLS option when CONFIG_COMPILE_TEST is set, which indicates that a non-production kernel (e.g. 0-day kernel) is built.
Signed-off-by: Helge Deller deller@gmx.de Reported-by: kernel test robot lkp@intel.com Fixes: 00e35f2b0e8a ("parisc: Enable -mlong-calls gcc option by default when !CONFIG_MODULES") Cc: stable@vger.kernel.org # v5.6+ Signed-off-by: Sudip Mukherjee sudipm.mukherjee@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/Kconfig | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -201,9 +201,12 @@ config PREFETCH def_bool y depends on PA8X00 || PA7200
+config PARISC_HUGE_KERNEL + def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST + config MLONGCALLS - def_bool y if !MODULES || UBSAN || FTRACE - bool "Enable the -mlong-calls compiler option for big kernels" if MODULES && !UBSAN && !FTRACE + def_bool y if PARISC_HUGE_KERNEL + bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL depends on PA8X00 help If you configure the kernel to include many drivers built-in instead