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Subject: Re: [PATCH v5 0/3] Kbuild: DWARF v5 support
To:     Nick Desaulniers <ndesaulniers@google.com>,
        Sedat Dilek <sedat.dilek@gmail.com>
CC:     Masahiro Yamada <masahiroy@kernel.org>,
        Nathan Chancellor <natechancellor@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Clang-Built-Linux ML <clang-built-linux@googlegroups.com>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        linux-arch <linux-arch@vger.kernel.org>,
        Jakub Jelinek <jakub@redhat.com>,
        Fangrui Song <maskray@google.com>,
        Caroline Tice <cmtice@google.com>,
        Nick Clifton <nickc@redhat.com>, Jiri Olsa <jolsa@kernel.org>,
        Andrii Nakryiko <andrii@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
References: <20210115210616.404156-1-ndesaulniers@google.com>
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From:   Yonghong Song <yhs@fb.com>
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On 1/15/21 3:34 PM, Nick Desaulniers wrote:
> On Fri, Jan 15, 2021 at 3:24 PM Yonghong Song <yhs@fb.com> wrote:
>>
>>
>>
>> On 1/15/21 1:53 PM, Sedat Dilek wrote:
>>> En plus, I encountered breakage with GCC v10.2.1 and LLVM=1 and
>>> CONFIG_DEBUG_INFO_DWARF4.
>>> So might be good to add a "depends on !DEBUG_INFO_BTF" in this combination.
> 
> Can you privately send me your configs that repro? Maybe I can isolate
> it to a set of configs?
> 
>>
>> I suggested not to add !DEBUG_INFO_BTF to CONFIG_DEBUG_INFO_DWARF4.
>> It is not there before and adding this may suddenly break some users.
>>
>> If certain combination of gcc/llvm does not work for
>> CONFIG_DEBUG_INFO_DWARF4 with pahole, this is a bug bpf community
>> should fix.
> 
> Is there a place I should report bugs?

You can send bug report to Arnaldo Carvalho de Melo <acme@kernel.org>, 
dwarves@vger.kernel.org and bpf@vger.kernel.org.

> 
>>
>>>
>>> I had some other small nits commented in the single patches.
>>>
>>> As requested in your previous patch-series, feel free to add my:
>>>
>>> Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
> 
> Yeah, I'll keep it if v6 is just commit message changes.
>