From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f179.google.com (mail-pl1-f179.google.com [209.85.214.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5108C261594 for ; Tue, 11 Feb 2025 19:09:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.179 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739301001; cv=none; b=F+dVO5UN6fDKnke07t+UFNLgagavYlpT1gr0pNsmmps++lVLS9WEYyTVk4yWfzRbunhaNa9mHSpPqoysLKVGjWxwmItid2nDuqgcN5Kh3g0nGJ6Raifl4GYAFUbqWqV6T1eqEF3OoYyAx497nll/ZQ8F+CIql1h++RinA4cPmKE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739301001; c=relaxed/simple; bh=erd1zJ+R61wo92ELNXvB28d/bNlj/qYeYQ+CjpxPXjE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hHB7xC8zahD+23V3+A+8gBmbBGRoZPehwXazqdJMsp+GqjBFI3z3S3nmM905st+NGq7rv4W8VA3PBSsBtEtCG9fDVt2aOB8TbbQoquaTRLcow+DYNGiUhJLwIg8E8HwknhQhFVvCKlmSRdbPYfC1tBzZHCp4+MT3U+2hhR08F6I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=QT3kKEyh; arc=none smtp.client-ip=209.85.214.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="QT3kKEyh" Received: by mail-pl1-f179.google.com with SMTP id d9443c01a7336-21f8c280472so17245ad.1 for ; Tue, 11 Feb 2025 11:09:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1739300998; x=1739905798; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=zsRY8DxU5oOqkirUpQpSEfLhJyGlqAVxdTEVQkM3WMs=; b=QT3kKEyhDou+T1BPQcCXL0UTuC0/xSUaFKjA7gaKXvEX9zYhY7jroy93AXMV5xcWMD MymXYsfePsBXd0xsDxKiMW5lvXzW4KbXvL5e3QvgRQNHFe6sd3qFN40TYcmFi2GU62J5 aGT9X3GqHC0sVFFPFdyc36lIFvoLQ39TRjA9tP/35kYRHXpz/8FdgwI+WwplCUI9cl+q NZ0LkvlFOMe7uiv0j3KQRv3ScWpUq7tp4WsNhKxnceQZqc0IPqUds2zKz/X+Ef5s1rz0 XF/64pRa+qULVUfEB5d2RGd4b+sFnxcnnL3Hd1pxX4tnDeHbgOZQInL+53J2jbVTiTGE U/UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739300998; x=1739905798; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=zsRY8DxU5oOqkirUpQpSEfLhJyGlqAVxdTEVQkM3WMs=; b=jfu6orPE0/2Eem2cgbjR1va5e1++sbYG7CICYeh7CljCCcb9NWox5KOaEzq6XRt5cG 96U+NnvSQbhT8b32MhNBHasBt7NwHpZmPIrE7mlO4HBqitYZKv8mPmt/EleJqNQ5jz52 76R52NwaidA51tMWV0UG9q7M5ecz5I3QCw3InJurowrG/OxCD0a6ENDUmn4OaG4khFjq Wqgvz6Fq4vc1nrMYMMw6lNXYtwGFyk2hKqcDVlTBdTNIdhCsB5MC2oEq4g2oOpbdN68N 0emao1zPCPRDA8nsQZtxiKmSHIkq7o5TZb0vf/+d0Fgoxw5PEgdsAdx0gKJuPgSI2DKr HWUQ== X-Forwarded-Encrypted: i=1; AJvYcCVYo94ZL54iv+ZlGWywH2nuNHzaG+x0oS1SiHdllO4Ebh5pHyLfFUBOy7F1fSRdFEFy7+p4RYdYAOXCs7w=@vger.kernel.org X-Gm-Message-State: AOJu0YzLVp+aSpkNFBPWucVv2tR38he6P1y4zOgE/n3QgWADXmF5MfIR FMFRzjmHC/9y9hpw09NRCFX+Ma/WvgU1ZCnqX8KflH/Q2aaecinCzCdFy9AkyA== X-Gm-Gg: ASbGncu84Ys4a9gX0JTqwXzC8Ap+4u21Om0OkTzQY8I5EQsK3i0trX6NHdagmnw2aYM CZdlKjZxgAlqgWPksSnPdmdPgiOWdmtEmEFizUQPD9dZfcLjopHvd6di9mmi29avQxqccyvK8X8 wdzoBbzQnXDGJRzyX9iPdPv3gXrsGXPc4tlv9zcmTLk9rfY0xISU8KCG5DoR/qmd0cxUacovQM0 t5ly3OIppUeKmGOS+dusd6cOX5QcpJXInhZL731kiVZhxXCbSJe3gAfzXZ/Ip0LqgDvI3fweDYW PN6K8YxQ2Ue49Ncgf1hWV9MK0DfjB3IivZKi0Zw4n3j5Xnv/bxi0tw== X-Google-Smtp-Source: AGHT+IHrWBPLYi6iTGNBgCMLpCFlEfO8bMl8chkgcZ2hAPZ3SiDkxvI4vmDKroixqqmvdANTGecJ4w== X-Received: by 2002:a17:903:13ce:b0:215:9ab0:402 with SMTP id d9443c01a7336-220bca6d869mr92705ad.18.1739300998169; Tue, 11 Feb 2025 11:09:58 -0800 (PST) Received: from google.com (147.141.16.34.bc.googleusercontent.com. [34.16.141.147]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ad548cc25d0sm5126832a12.5.2025.02.11.11.09.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Feb 2025 11:09:57 -0800 (PST) Date: Tue, 11 Feb 2025 19:09:52 +0000 From: Peilin Ye To: Eduard Zingerman Cc: bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, bpf@ietf.org, Xu Kuohai , David Vernet , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Jonathan Corbet , "Paul E. McKenney" , Puranjay Mohan , Ilya Leoshkevich , Heiko Carstens , Vasily Gorbik , Catalin Marinas , Will Deacon , Quentin Monnet , Mykola Lysenko , Shuah Khan , Ihor Solodrai , Yingchi Long , Josh Don , Barret Rhoden , Neel Natu , Benjamin Segall , linux-kernel@vger.kernel.org Subject: Re: [PATCH bpf-next v2 8/9] selftests/bpf: Add selftests for load-acquire and store-release instructions Message-ID: References: <3ac854ac5cc62e78fadd2a7f1af9087ec3fc7a9c.1738888641.git.yepeilin@google.com> <6976077bc2d417169a437bc582a72defd1dec3d4.camel@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6976077bc2d417169a437bc582a72defd1dec3d4.camel@gmail.com> On Mon, Feb 10, 2025 at 04:08:44PM -0800, Eduard Zingerman wrote: > > +++ b/tools/testing/selftests/bpf/progs/verifier_load_acquire.c > > @@ -0,0 +1,190 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > + > > +#include > > +#include > > +#include "../../../include/linux/filter.h" > > +#include "bpf_misc.h" > > + > > +#if defined(ENABLE_ATOMICS_TESTS) && defined(__TARGET_ARCH_arm64) > > [...] > > > +#else > > + > > +SEC("socket") > > +__description("load-acquire is not supported by compiler or jit, use a dummy test") > > +__success > > +int dummy_test(void) > > +{ > > + return 0; > > +} > > Nit: why is dummy_test() necessary? It's just to make it clear when these tests are (effectively) skipped. Otherwise, e.g. -cpuv4 runner with LLVM-18 on x86-64 would give: #518 verifier_load_acquire:OK With dummy_test(), we would see: (FWIW, for v3 I'm planning to change __description() to the following, since new tests no longer depend on __BPF_FEATURE_LOAD_ACQ_STORE_REL.) #518/1 verifier_load_acquire/Clang version < 18, or JIT does not support load-acquire; use a dummy test:OK #518 verifier_load_acquire:OK Commit 147c8f4470ee ("selftests/bpf: Add unit tests for new sign-extension load insns") did similar thing in verifier_ldsx.c. > > + > > +#endif > > + > > +char _license[] SEC("license") = "GPL"; > > [...] Thanks, Peilin Ye