Re: [PATCH] powerpc/32: Include .branch_lt in data section

Alan Modra [off-list ref] writes:

On Wed, Nov 14, 2018 at 01:32:18PM +1030, Joel Stanley wrote:

quoted

When building a 32 bit powerpc kernel with Binutils 2.31.1 this warning
is emitted:

 powerpc-linux-gnu-ld: warning: orphan section `.branch_lt' from
 `arch/powerpc/kernel/head_44x.o' being placed in section `.branch_lt'

As of binutils commit 2d7ad24e8726 ("Support PLT16 relocs against local
symbols")[1], 32 bit targets can produce .branch_lt sections in their
output.

Include these symbols in the .data section as the ppc64 kernel does.

[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=2d7ad24e8726ba4c45c9e67be08223a146a837ce
Signed-off-by: Joel Stanley <joel@jms.id.au>

Reviewed-by: Alan Modra <redacted>

Looks fine to me.

quoted

---
I wasn't sure where this should go or if the ordering matters.

The usual answer is: "Look at where the section goes in the standard
linker scripts."   But that doesn't apply here.  The section will be
empty for a kernel build so it doesn't matter where it goes.

If it's empty why don't we just discard it?

cheers