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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: "Jose E. Marchesi" <jose.marchesi@oracle.com>
Cc: Yonghong Song <yhs@fb.com>, bpf <bpf@vger.kernel.org>,
	Alexei Starovoitov <ast@kernel.org>,
	Andrii Nakryiko <andrii@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Kernel Team <kernel-team@fb.com>, Mark Wielaard <mark@klomp.org>,
	david.faust@oracle.com
Subject: Re: [PATCH bpf-next v2 00/11] bpf: add support for new btf kind BTF_KIND_TAG
Date: Thu, 17 Feb 2022 07:28:55 -0800	[thread overview]
Message-ID: <CAADnVQJAHwMuyikV5+2xk5fUwsieH246YdqNFXFE0W1_AiD_qw@mail.gmail.com> (raw)
In-Reply-To: <875ypdvdcr.fsf@oracle.com>

On Thu, Feb 17, 2022 at 5:20 AM Jose E. Marchesi
<jose.marchesi@oracle.com> wrote:
>
> Just a heads-up.
>
> We are still working on the GCC implementation of the tags.  Having some
> difficulties with the ordering of the C type attributes.
>
> Regarding the DWARF part, GCC uses DWARF as the internal "canonical"
> debug info, and the BTF is generated from it.  This means we had to add
> a DWARF DIE for the pointer tag qualifier anyway in order to convey the
> info to BTF.  So now it is just a matter of emitting it along with the
> rest of the DWARF.

Thanks for the update!
Do you have an early git branch we can use to test building
the kernel with it?
Or is it not at this level yet?

  reply	other threads:[~2022-02-17 15:29 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-13 15:51 [PATCH bpf-next v2 00/11] bpf: add support for new btf kind BTF_KIND_TAG Yonghong Song
2021-09-13 15:51 ` [PATCH bpf-next v2 01/11] btf: change BTF_KIND_* macros to enums Yonghong Song
2021-09-14  4:59   ` Andrii Nakryiko
2021-09-14 15:53     ` Yonghong Song
2021-09-13 15:51 ` [PATCH bpf-next v2 02/11] bpf: support for new btf kind BTF_KIND_TAG Yonghong Song
2021-09-14  5:08   ` Andrii Nakryiko
2021-09-14 15:59     ` Yonghong Song
2021-09-14 23:30       ` Andrii Nakryiko
2021-09-13 15:51 ` [PATCH bpf-next v2 03/11] libbpf: rename btf_{hash,equal}_int to btf_{hash,equal}_int_tag Yonghong Song
2021-09-13 15:51 ` [PATCH bpf-next v2 04/11] libbpf: add support for BTF_KIND_TAG Yonghong Song
2021-09-14  5:15   ` Andrii Nakryiko
2021-09-14 16:42     ` Yonghong Song
2021-09-13 15:51 ` [PATCH bpf-next v2 05/11] bpftool: " Yonghong Song
2021-09-14  5:16   ` Andrii Nakryiko
2021-09-13 15:51 ` [PATCH bpf-next v2 06/11] selftests/bpf: test libbpf API function btf__add_tag() Yonghong Song
2021-09-14  5:18   ` Andrii Nakryiko
2021-09-13 15:52 ` [PATCH bpf-next v2 07/11] selftests/bpf: change NAME_NTH/IS_NAME_NTH for BTF_KIND_TAG format Yonghong Song
2021-09-14  5:23   ` Andrii Nakryiko
2021-09-13 15:52 ` [PATCH bpf-next v2 08/11] selftests/bpf: add BTF_KIND_TAG unit tests Yonghong Song
2021-09-14  5:31   ` Andrii Nakryiko
2021-09-14 17:00     ` Yonghong Song
2021-09-13 15:52 ` [PATCH bpf-next v2 09/11] selftests/bpf: test BTF_KIND_TAG for deduplication Yonghong Song
2021-09-14  5:38   ` Andrii Nakryiko
2021-09-14 17:15     ` Yonghong Song
2021-09-14 19:39     ` Yonghong Song
2021-09-14 23:31       ` Andrii Nakryiko
2021-09-13 15:52 ` [PATCH bpf-next v2 10/11] selftests/bpf: add a test with a bpf program with btf_tag attributes Yonghong Song
2021-09-13 15:52 ` [PATCH bpf-next v2 11/11] docs/bpf: add documentation for BTF_KIND_TAG Yonghong Song
2021-09-14  5:40   ` Andrii Nakryiko
2021-09-13 16:08 ` [PATCH bpf-next v2 00/11] bpf: add support for new btf kind BTF_KIND_TAG Yonghong Song
2021-09-13 16:40   ` Jose E. Marchesi
2021-12-16 21:52     ` Yonghong Song
2021-12-17 10:40       ` Jose E. Marchesi
2021-12-18  1:44         ` Alexei Starovoitov
2021-12-18 20:15           ` Yonghong Song
2021-12-20  9:49             ` Jose E. Marchesi
2021-12-20 15:52               ` Yonghong Song
2022-01-25  3:58               ` Yonghong Song
2022-01-27 15:38                 ` Jose E. Marchesi
2022-01-27 16:42                   ` Yonghong Song
2022-02-17 13:20                     ` Jose E. Marchesi
2022-02-17 15:28                       ` Alexei Starovoitov [this message]
2022-02-17 16:41                         ` Jose E. Marchesi

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