Christophe
On 01/26/2016 10:58 AM, Christophe Lyon wrote:
On 25 January 2016 at 17:21, Dan Murphy dmurphy@ti.com wrote:
Hi!
When using the linaro-4.9-2015.05 toolchain on the Linux master and on Linux stable releases I am seeing a build issue below when using the allyesconfig. This does not seem to occur on the 5.2 tool chain. We cannot move to 5.2 tool chain for our releases as they are based on 4.9.
LD init/built-in.o arch/arm/kernel/built-in.o:(.text.fixup+0x1d4): relocation truncated to fit: R_ARM_JUMP24 against `.text.unlikely' arch/arm/kernel/built-in.o:(.text.fixup+0x1e0): relocation truncated to fit: R_ARM_JUMP24 against `.text.unlikely' arch/arm/kernel/built-in.o:(.text.fixup+0x1ec): relocation truncated to fit: R_ARM_JUMP24 against `.text.unlikely' drivers/built-in.o: In function `combiner_handle_cascade_irq': :(.text+0x834): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_lock' defined in .spinlock.text section in kernel/built-in.o :(.text+0x868): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_unlock' defined in .spinlock.text section in kernel/built-in.o drivers/built-in.o: In function `hip04_irq_set_type': :(.text+0xad0): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_lock' defined in .spinlock.text section in kernel/built-in.o :(.text+0xb10): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_unlock' defined in .spinlock.text section in kernel/built-in.o drivers/built-in.o: In function `hip04_raise_softirq': :(.text+0xc8c): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_lock_irqsave' defined in .spinlock.text section in kernel/built-in.o :(.text+0xdc8): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_unlock_irqrestore' defined in .spinlock.text section in kernel/built-in.o drivers/built-in.o: In function `hip04_irq_set_affinity': :(.text+0xefc): relocation truncated to fit: R_ARM_CALL against symbol `_raw_spin_lock' defined in .spinlock.text section in kernel/built-in.o :(.text+0xf78): additional relocation overflows omitted from the output make: *** [vmlinux] Error 1
Please advise to how to resolve this issue within the 4.9 Linaro tool chain
Hi Dan,
It would be better to report this kind of problem using our bugzilla: https://bugs.linaro.org/
I've managed to reproduce it, except for the errors with R__ARM_JUMP24. Maybe that's because I used linux-4.3.3.tar.xz.
Anyway, these errors indicate branches trying reach a function which is too far away from the call site. Normally, the linker inserts stubs (trampolines) to handle such situations, but here the .text section of drivers/built-in.o is really huge: 84247436 bytes (84MB) in my case. The linker is able to insert trampolines at section boundaries (between object files), but in this case it cannot insert one close enough, hence the error you are seeing.
Do we know if this is a linux kernel issue or a linker issue that got exposed when a patch came in?
Dan
The range of branch instructions is indicated for instance here: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0204j/Cihfdda...
I'm not sure why this would no happen with the 5.2 toolchain, I haven't tried.
Christophe.
Dan
--
Dan Murphy
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