linux-kernel - Re: [PATCH bpf-next v1 1/2] selftests/bpf: Update "vmtest.sh" for cross-compile arm64 on x86

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Message-ID: <f1dd704e-dfbd-496b-9466-83efe38c5287@huawei.com>
Date: Tue, 27 Aug 2024 22:05:47 +0800
From: Pu Lehui <pulehui@...wei.com>
To: Lin Yikai <yikai.lin@...o.com>
CC: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
	<daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau
	<martin.lau@...ux.dev>, Eduard Zingerman <eddyz87@...il.com>, Song Liu
	<song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, John Fastabend
	<john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, Stanislav Fomichev
	<sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
	Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>, Nick Terrell
	<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 v1 1/2] selftests/bpf: Update "vmtest.sh" for
 cross-compile arm64 on x86_64 host.


On 2024/8/27 21:39, Lin Yikai wrote:
> Identify "$CROSS_COMPILE" to enable vm_test for cross-compile situation.
> Additionally, use "-cpu cortex-a57" flag to accommodate the majority of QEMU CPU lists,
> avoiding using "-cpu host," which can cause qemu_system_aarch64 start failure on x86_64 host.
> 
> Signed-off-by: Lin Yikai <yikai.lin@...o.com>
> ---
>   tools/testing/selftests/bpf/README.rst | 12 ++++++++-
>   tools/testing/selftests/bpf/vmtest.sh  | 37 +++++++++++++++++++++-----
>   2 files changed, 42 insertions(+), 7 deletions(-)
> 
Hi Yikai,

Your patch reminds me of a previous commit [0], which was able to 
support running vmtest in cross platform for all arch.

Link: 
https://lore.kernel.org/all/20240328124916.293173-2-pulehui@huaweicloud.com/ 
[0]