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| author |   Helge Deller <deller@gmx.de> | 2021-03-02 21:07:07 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2021-03-02 21:21:17 +0100 |
| commit | 778e45d7720d663811352943dd515b41f6849637 (patch) | |
| tree | 11f884ed1275cf800a9bc2b091234e24bf2267f9 /arch/parisc | |
| parent | Linux 5.12-rc1 (diff) | |
| download | linux-dev-778e45d7720d663811352943dd515b41f6849637.tar.xz linux-dev-778e45d7720d663811352943dd515b41f6849637.zip | |
parisc: Enable -mlong-calls gcc option with CONFIG_COMPILE_TEST
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+
Diffstat (limited to 'arch/parisc')
| -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 4e53ac46e857..afc3b8d03572 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -203,9 +203,12 @@ 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 |