From nobody Sat Oct 4 09:38:00 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 BE37C275AFA; Mon, 18 Aug 2025 19:26:32 +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=1755545192; cv=none; b=WlpiJ4X8srgIdDrn2BqLeWTnLHsI84SGNELFhSkCklmveN9gFqctYDZN5VXxFIapknozu71ZxFP64T/GYTPLWSJZLv4Oq0dQcSyBcamYp/E+orCDtLXZwmLWDCaAZgPBfCVeXxOgMjoxSETD6jJuanjKcsKJ1frc9iaLHQ1D5Qo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755545192; c=relaxed/simple; bh=Yp4rWZGTDT5KFNRfuZwRUzBhL1WXxvUosbp+WU+yAyM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=loxAxHnsT+Mv4ohU0aI0jtWsYofuY6ewuRut7PpllrxuUrINCl6bTLcWfCPrd+hJVc3mDDfjom5/jblKD/DlDzzvvs5Aah/LHpeimg5zqM4lUTyaGfZFFaFxbGoSVvae1p6IYdZ7VIjnksIQH5tt7imp7/bPvCKR2X9elWvU7t0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=enYR4qj7; 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="enYR4qj7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3B7CC4CEED; Mon, 18 Aug 2025 19:26:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755545192; bh=Yp4rWZGTDT5KFNRfuZwRUzBhL1WXxvUosbp+WU+yAyM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=enYR4qj7ytofyZvFaTFCUCZu1/wM8GKJTrdhnlmPC6ADnC98OmNkXGeWKYxgkkiqa JS/LtmHCCrQdxGDD8KFOLsz4q8ZxyD2h0cxqCrMLEK3Ze7Bwnj4vbXBAW8SIMc0ELF 7Ipj640hZ51Kz4yC7uauTta29m2s7d9Uo27IIEI9rzQYwkMVvbs1GxRaJ+ENLSWuC6 J6uSsSX9bh3IAYHCOTXWWRNtHgic/0kET6gfjGWr0Juyf5Bs9AWTobf8R0JznyREix mQO3Ev9ysKTMxqHlbvymgM0A44bC2DcPDSI8EiEZPcW/SbC3YdClUypJYMRReLWSKd BYz1JaMud4g2g== From: Mark Brown Date: Mon, 18 Aug 2025 20:21:20 +0100 Subject: [PATCH v3 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: <20250818-arm64-lsfe-v3-3-af6f4d66eb39@kernel.org> References: <20250818-arm64-lsfe-v3-0-af6f4d66eb39@kernel.org> In-Reply-To: <20250818-arm64-lsfe-v3-0-af6f4d66eb39@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=Yp4rWZGTDT5KFNRfuZwRUzBhL1WXxvUosbp+WU+yAyM=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBoo35cNLSX6TytXvCWIkh1aXNAVcK8MraPbgJUI mJwRba6cluJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCaKN+XAAKCRAk1otyXVSH 0CH0CACCOVx3HNaVMqyPEwTi7A3oJxaPSzOk7n4/tjcUwCF85/+WFdLaEaHCuePMjrYUveEuGsw xCWs2hJ+6pJG5LR2/YwTcp75aeAxyCPybxR5Km1Lb1yotTpw2ZlaO1vQP6ZA3TbBfa41bQR8EMr dWqtGVwyJeN0eJRue9bp2yiwqwvSAKXS1JETnFsjAQSk3L3p6zDU4rf8ozCvjhOfGWm5bTBzO2j ePrni6UZoCwVxGZC4twgwRkO71CcRCKhUh+UrJcfAK+aSWcntU1rh7bL/p+qx3+fXAeS1KdYn01 dZ/0qMkZ6lTfSrIHzp/T+EIBmfzZx4g9Py0TNy5DznPPFols 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 002ec38a8bbb..941890f69df6 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 @@ -169,6 +171,18 @@ 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] */ @@ -762,6 +776,13 @@ 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