This is a note to let you know that I've just added the patch titled
parisc: Enable -mlong-calls gcc option with CONFIG_COMPILE_TEST
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-enable-mlong-calls-gcc-option-with-config_compile_test.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Mar 10 01:08:03 PM CET 2021
From: Helge Deller <deller@xxxxxx>
Date: Tue, 2 Mar 2021 21:07:07 +0100
Subject: parisc: Enable -mlong-calls gcc option with CONFIG_COMPILE_TEST
From: Helge Deller <deller@xxxxxx>
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@xxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Fixes: 00e35f2b0e8a ("parisc: Enable -mlong-calls gcc option by default when !CONFIG_MODULES")
Cc: stable@xxxxxxxxxxxxxxx # v5.6+
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-5.11/parisc-enable-mlong-calls-gcc-option-with-config_compile_test.patch
