From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: Include .BTF section
Date: Mon, 24 Feb 2020 09:33:15 +0530 [thread overview]
Message-ID: <1582516561.ya4ydk7t7x.naveen@linux.ibm.com> (raw)
In-Reply-To: <8736b0j090.fsf@mpe.ellerman.id.au>
Michael Ellerman wrote:
> "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> writes:
>> Selecting CONFIG_DEBUG_INFO_BTF results in the below warning from ld:
>> ld: warning: orphan section `.BTF' from `.btf.vmlinux.bin.o' being placed in section `.BTF'
>>
>> Include .BTF section in vmlinux explicitly to fix the same.
>
> I don't see any other architectures doing this in their linker script.
> Why are we special?
I think this is due to commit 83a092cf95f28 ("powerpc: Link warning for
orphan sections"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=83a092cf95f28
If your question was why I didn't include the .BTF section in .data,
it's because libbpf seems to expect the .BTF section to be separate.
- Naveen
PS: I also see a linker warning for '.gnu.hash' if I enable
CONFIG_RELOCATABLE, but I couldn't decipher what that was for, and if it
should be retained.
next prev parent reply other threads:[~2020-02-24 4:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-20 11:31 [PATCH] powerpc: Include .BTF section Naveen N. Rao
2020-02-24 0:29 ` Michael Ellerman
2020-02-24 4:03 ` Naveen N. Rao [this message]
2020-02-24 11:03 ` Michael Ellerman
2020-02-27 12:31 ` Michael Ellerman
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