On Mon, 2008-03-03 at 13:03 -0800, David Miller wrote: > From: Adrian Bunk <bunk@xxxxxxxxxx> > Date: Mon, 3 Mar 2008 21:26:51 +0200 > > > LD arch/sparc/boot/image > > arch/sparc/kernel/built-in.o:(__ex_table+0x394): undefined reference to `kernel_unaligned_trap_fault' > ... > > arch/sparc/kernel/built-in.o:(__ex_table+0x46c): undefined reference to `user_unaligned_trap_fault' > > > Does anyone have a clue what's going wrong here? > > We hit the same problem a while back on sparc64 too. > > GCC can't see how the inline asm is reachable so eliminates it > entirely. We hide the label inside the inline asm string and call it > from exception handlers. > > The way we fixed this on sparc64 was quite invasive (patch below for > reference), so I'll try to come up with something simpler. Could you hide the asm inside an actual function and annotate the function with __used? Similar to how the kprobes has a function called kretprobe_trampoline_holder for their trampoline asm? arch/x86/kernel/kprobes.c line 584 Cheers, Harvey -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
