linux-kernel - Re: [PATCH bpf-next v2 8/9] selftests/bpf: Add selftests for load-acquire and store-release instructions

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Message-ID: <137eabdcb1494debd9f321ad6dc39443c084ad34.camel@gmail.com>
Date: Wed, 19 Feb 2025 17:21:31 -0800
From: Eduard Zingerman <eddyz87@...il.com>
To: Peilin Ye <yepeilin@...gle.com>
Cc: bpf@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, bpf@...f.org,
  Xu Kuohai <xukuohai@...weicloud.com>, David Vernet <void@...ifault.com>,
 Alexei Starovoitov	 <ast@...nel.org>, Daniel Borkmann
 <daniel@...earbox.net>, Andrii Nakryiko	 <andrii@...nel.org>, Martin KaFai
 Lau <martin.lau@...ux.dev>, Song Liu	 <song@...nel.org>, Yonghong Song
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 Singh <kpsingh@...nel.org>, Stanislav Fomichev	 <sdf@...ichev.me>, Hao Luo
 <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,  Jonathan Corbet	
 <corbet@....net>, "Paul E. McKenney" <paulmck@...nel.org>, Puranjay Mohan	
 <puranjay@...nel.org>, Ilya Leoshkevich <iii@...ux.ibm.com>, Heiko Carstens
	 <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, Catalin Marinas	
 <catalin.marinas@....com>, Will Deacon <will@...nel.org>, Quentin Monnet	
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 <shuah@...nel.org>,  Ihor Solodrai <ihor.solodrai@...ux.dev>, Yingchi Long
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 <brho@...gle.com>, Neel Natu <neelnatu@...gle.com>, Benjamin Segall
 <bsegall@...gle.com>, 	linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf-next v2 8/9] selftests/bpf: Add selftests for
 load-acquire and store-release instructions

On Thu, 2025-02-20 at 01:08 +0000, Peilin Ye wrote:

[...]

> Then realized that I can't check __clang_major__ in .../prog_tests/*
> files (e.g. I was building prog_tests/verifier.c using GCC).  I think
> ideally we should do something similar to prog{,_test}s/arena_atomics.c,
> i.e. use a global bool in BPF source to indicate if we should skip this
> test, but that seems to require non-trivial changes to
> prog_tests/verifier.c?
> 
> For the purpose of this patchset, let me keep dummy_test(), like what we
> have now in verifier_ldsx.c.

Well, that's unfortunate.
Thank you for trying.