linux-kernel - Re: ERROR: INT DW_ATE_unsigned

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Message-ID: <20210205192446.GH920417@kernel.org>
Date:   Fri, 5 Feb 2021 16:24:46 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Yonghong Song <yhs@...com>
Cc:     sedat.dilek@...il.com,
        Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        dwarves@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        bpf@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
        Jan Engelhardt <jengelh@...i.de>,
        Domenico Andreoli <cavok@...ian.org>,
        Matthias Schwarzott <zzam@...too.org>,
        Andrii Nakryiko <andriin@...com>,
        Mark Wieelard <mjw@...hat.com>,
        Paul Moore <paul@...l-moore.com>,
        Ondrej Mosnacek <omosnace@...hat.com>,
        Daniel P. Berrangé <berrange@...hat.com>,
        Tom Stellard <tstellar@...hat.com>
Subject: Re: ERROR: INT DW_ATE_unsigned_1 Error emitting BTF type

Em Fri, Feb 05, 2021 at 11:10:08AM -0800, Yonghong Song escreveu:
> On 2/5/21 11:06 AM, Sedat Dilek wrote:
> > On Fri, Feb 5, 2021 at 7:53 PM Sedat Dilek <sedat.dilek@...il.com> wrote:
> > Grepping through linux.git/tools I guess some BTF tools/libs need to
> > know what BTF_INT_UNSIGNED is?
 
> BTF_INT_UNSIGNED needs kernel support. Maybe to teach pahole to
> ignore this for now until kernel infrastructure is ready.

Yeah, I thought about doing that.

> Not sure whether this information will be useful or not
> for BTF. This needs to be discussed separately.

Maybe search for the rationale for its introduction in DWARF.

- ARnaldo