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| author | Helge Deller <deller@gmx.de> | 2021-03-02 23:07:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-11 16:17:21 +0300 |
| commit | a6425142f522d7e8ac5244ff94cf6cd844ddc818 (patch) | |
| tree | 66b2e055fe5364f38ea630713e7d01d9e0fac834 /arch | |
| parent | ea222427ae9ced2ad6c39d0bbbd8f8c66b2a5045 (diff) | |
| download | linux-a6425142f522d7e8ac5244ff94cf6cd844ddc818.tar.xz | |
parisc: Enable -mlong-calls gcc option with CONFIG_COMPILE_TEST
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/Kconfig | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 04dc17d52ac2..14f3252f2da0 100644 --- 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 |