Re: [PATCH] blackfin: Makefile: Skip reloc overflow issue when COMPILE_TEST enabled

[Richard Weinberger <richard@nod.at>]

Am 08.04.2015 um 23:05 schrieb Chen Gang:
> l1_text is at L1_CODE_START (e.g. for bf533, 0xff800000). If the kernel
> is too big, it may be overwritten, the related issue:
> 
>     LD      init/built-in.o
>   init/built-in.o: In function `do_early_param':
>   init/main.c:(.init.text+0xe0): relocation truncated to fit: R_BFIN_PCREL24 against symbol `strcmp' defined in .l1.text section in arch/blackfin/lib/lib.a(strcmp.o)
>   init/main.c:(.init.text+0x10e): relocation truncated to fit: R_BFIN_PCREL24 against symbol `strcmp' defined in .l1.text section in arch/blackfin/lib/lib.a(strcmp.o)
>   init/built-in.o: In function `unknown_bootoption':
> 
> blackfin is for embedded system, the size limitition is acceptable, so
> it is not the real world issue, which should be skipped if COMPILE_TEST
> enabled.

You're again papering over the real issue.
COMPILE_TEST is only one way to generate a too big kernel.
The right thing is to blow up and warn the user.

Thanks,
//richard