From nobody Wed Oct 8 02:18:30 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5DBB02550BA; Thu, 3 Jul 2025 16:26:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751560017; cv=none; b=nnlsyNGcjzqmPlowdHZDGfiGMwjmJDH1cJvBbp6PCNTB7uaB1biXYhHIZajfFbMc0TDnXO9c9w1w9ovPGHdsbxLnyI3wNlqMoqb77fqZQQj6rqKhaUbWtrF2abhUQ/vOqwKg+sXVR12mQJ6jkJACB4qHPSGLk3XvuSL1LIqIk7o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751560017; c=relaxed/simple; bh=0se/eq+gWDDz/zPGLfe64NetxynymgwpyPlKXYP8XIU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=TRcCSWFJybUQIbCzOy3ZrmrDXtqxlSbUs/QRebW9ATKsjNU5UVoLXsaEamHlRhaQE52jJ+F/UaxUl/SEhUZNZJhk0jB2iuM+7PjVSuBgP8L9HcoCzZppBykxQvJ/ZalbbOsqtimh46AtfyFDLurVZUBb/AMHCOb4KAeGY0TID+w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=F9xYnMul; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="F9xYnMul" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57858C4CEE3; Thu, 3 Jul 2025 16:26:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751560015; bh=0se/eq+gWDDz/zPGLfe64NetxynymgwpyPlKXYP8XIU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=F9xYnMulVuNGNvAGTBMpLlkUdOXV29MzVXEe033VuqVu/tGe+RWsJngzdz4IffUZF TlFfr0OzdjCXXzY5GuscScdCqMN4WdRq00y7yQ79g33zU0CeoS7fDu5zmWPpovhul5 ZpqA/v/ijUwmYLGzJmt8RMJ2UuKToISDuzKDPkyqtBjsZ0ev9agFlQ4yyBi80TBfV+ c9pcjON/ohz7/AITWDxJYIcAcipay9tALB0V3775LUsr27Z0zso2ElZBpm547GWVvL /Seqd/LMJsI+P9t4/SG/wnc32xVf9Rwn8YlZIaCiUv6D0bP+sqI5ZeiRE+LEbZPRwp cUgjf2kBSiWFA== From: Mark Brown Date: Thu, 03 Jul 2025 17:23:24 +0100 Subject: [PATCH v2 3/3] kselftest/arm64: Add lsfe to the hwcaps test 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250703-arm64-lsfe-v2-3-eced80999cb4@kernel.org> References: <20250703-arm64-lsfe-v2-0-eced80999cb4@kernel.org> In-Reply-To: <20250703-arm64-lsfe-v2-0-eced80999cb4@kernel.org> To: Catalin Marinas , Will Deacon , Jonathan Corbet , Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Shuah Khan Cc: linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org, Mark Brown X-Mailer: b4 0.15-dev-cff91 X-Developer-Signature: v=1; a=openpgp-sha256; l=1403; i=broonie@kernel.org; h=from:subject:message-id; bh=0se/eq+gWDDz/zPGLfe64NetxynymgwpyPlKXYP8XIU=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBoZq9DrX1z69CleuGaYuiPYfm4x17/sToCyk2zP Nm99VorSU2JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCaGavQwAKCRAk1otyXVSH 0LtRB/45/MTmfubRL3pBtMgXgWZMq82PR/jkn5ACdHwS7IGViT7FD2ZmgEzsylFTLDfTmP4bjqb pbVkdOsCSZJylYyOKBy6J9aDXd7tjwVYbfLr1jFUylvwqe2j5aZ27QCwhe1PC+DOzTvNkqEzvEB UIUPledQkbmnZJXMySkE4RVNqUaTB8ws5T8BGrQjz+ncH0gVf+yZfXpkdxiXetLZ4QTqNj1FjDR ip9vM1mAiEyMlpLqJeNt0L/XcFLEWNFVgOO78k+oVlAMlESket+6r99C6oAxaBjOv9nmGxTRVCw 0i3NukLDRtFDCW/v6+sTv43stjBooDOAlxzXewZLYPF/ko5z X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB This feature has no traps associated with it so the SIGILL is not reliable. Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/abi/hwcap.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/self= tests/arm64/abi/hwcap.c index 35f521e5f41c..faa0f82f27e0 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -17,6 +17,8 @@ #include #include =20 +#include + #include "../../kselftest.h" =20 #define TESTS_PER_HWCAP 3 @@ -165,6 +167,18 @@ static void lse128_sigill(void) : "cc", "memory"); } =20 +static void lsfe_sigill(void) +{ + float __attribute__ ((aligned (16))) mem =3D 0; + register float *memp asm ("x0") =3D &mem; + + /* LDFADD H0, H0, [X0] */ + asm volatile(".inst 0x7c200000" + : "+r" (memp) + : + : "cc", "memory"); +} + static void lut_sigill(void) { /* LUTI2 V0.16B, { V0.16B }, V[0] */ @@ -758,6 +772,13 @@ static const struct hwcap_data { .cpuinfo =3D "lse128", .sigill_fn =3D lse128_sigill, }, + { + .name =3D "LSFE", + .at_hwcap =3D AT_HWCAP3, + .hwcap_bit =3D HWCAP3_LSFE, + .cpuinfo =3D "lsfe", + .sigill_fn =3D lsfe_sigill, + }, { .name =3D "LUT", .at_hwcap =3D AT_HWCAP2, --=20 2.39.5