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Message-ID: <CAEf4BzbfBQZqy2w4TiTBR9mi4AMQkWKk8Un8Lp21ELQBgsgcvQ@mail.gmail.com>
Date: Thu, 5 Sep 2024 13:24:31 -0700
From: Andrii Nakryiko <andrii.nakryiko@...il.com>
To: Lin Yikai <yikai.lin@...o.com>
Cc: andrii@...nel.org, ast@...nel.org, daniel@...earbox.net, 
	martin.lau@...ux.dev, eddyz87@...il.com, song@...nel.org, 
	yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org, 
	sdf@...ichev.me, haoluo@...gle.com, jolsa@...nel.org, mykolal@...com, 
	shuah@...nel.org, terrelln@...com, bpf@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
	opensource.kernel@...o.com
Subject: Re: [PATCH bpf-next v2 0/2] selftests/bpf: Enable vmtest for
 cross-compile arm64 on x86_64 host, and fix some issues.

On Wed, Aug 28, 2024 at 5:17 AM Lin Yikai <yikai.lin@...o.com> wrote:
>
> These two patch enable the use of "vmtest.sh" for cross-compile arm64 on x86_64 host.
> This is essential for utilizing BPF on Android (arm64),
> as the compilation server is running on Ubuntu (x86).
>
> Following previous guidance from V1, the two changes are as follow:
>
> V2:
> - patch 2:
>    - [1/2] In Makefile, use $(SRCARCH) to get target arch's uapi.
>            Therefore, there is no longer a need to compile "make headers_install".
>    - [2/2] Regard "LDLIBS += -lzstd" as a separate patch for static compile.
>
> v1:
>    Link: https://lore.kernel.org/bpf/20240827133959.1269178-1-yikai.lin@vivo.com/
> - patch 2:
>    - [1/2] Update "vmtest.sh" for cross-compile arm64 on x86_64 host.
>    - [2/2] Fix cross-compile issue for some files and a static compile issue for "-lzstd"
>
> Lin Yikai (2):
>   selftests/bpf: Enable vmtest for cross-compile arm64 on x86_64 host,
>     and fix some related issues.
>   selftests/bpf: fix static cross-compile error for liblstd.a linking.
>
>  tools/testing/selftests/bpf/Makefile   |  8 +++++-
>  tools/testing/selftests/bpf/README.rst | 11 +++++++-
>  tools/testing/selftests/bpf/vmtest.sh  | 37 +++++++++++++++++++++-----
>  3 files changed, 48 insertions(+), 8 deletions(-)
>
> --
> 2.34.1
>
>

Given that [0] series was just applied and it also has some bits that
address cross-compilation, can you please rebase and re-check what
sort of changes you still need on top of that?

  [0] https://lore.kernel.org/all/20240905081401.1894789-1-pulehui@huaweicloud.com/

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