From mboxrd@z Thu Jan 1 00:00:00 1970 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 551392EBBA8; Fri, 27 Jun 2025 17:25:16 +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=1751045116; cv=none; b=UQrOeNJXoWkDxMhZHVOJvzoj3ZnxCkTgtU16RqoPNANqRb3eLe1gVgn6a3gwI2lYzezelqAbrwC5GFsy0Fqwncu+5YKebmSXoquYdMfbeNnDbFqgMXfEHChtX/LnnVLyxj0piuZwvMjLkJwBeK1U6erVWZgN4qY20nQCZQIJUuA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751045116; c=relaxed/simple; bh=lH2UPYp6QCoEhr4YOD4G34RicJOUqUNXtxpfpE/H2hQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=hX0V6KxvJ9zhWAY348ZJjaJZ+pTyH5T3WTaWIFX/6xTPYnW4r14IoPVJHYwj4sJ2eeySlEwLx42CkOeOe089Pn7qUMk9H7oTzzz8NolRhJk7Mqz8ptiZoVpCHMNA8vsd68GM+6kAm5mskSmyhPEzxl3+gVDuQXi6CgtC+G3wffQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mkF1UUJ/; 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="mkF1UUJ/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD342C4CEF1; Fri, 27 Jun 2025 17:25:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751045116; bh=lH2UPYp6QCoEhr4YOD4G34RicJOUqUNXtxpfpE/H2hQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=mkF1UUJ/jF5LyPnV9B8BJwjRIGHIl8zLQkLQBsrWZKEGb8SBkvLa8jRSNa6qgMQZv pBIIc0622B0Gw2SQ6vVqwWr6289TmMZxjXrA8ZuvvVzIZhVCUMnvrUrlfjbx7S2d+2 AXYocZpqY0qZ4cr1S1ADPeQtAkLpSFYRyS054D8waAKCBQtXM7w5snKxUdq/J/bWAc GsCeURDU6QpyBmLMKdN5n8+cWrLRckFu5MeZCXfBXDFkAMZM+jE6/HIzfm6LHdJJhE 6k079+yJOD0zdKdDxb6RqMnUbktSjcbBjN9KoxQR+yJHbShOXQ9kkzSSDort40GUxK 9++ZdvO+uSIrg== From: Mark Brown Date: Fri, 27 Jun 2025 18:20:46 +0100 Subject: [PATCH 3/3] kselftest/arm64: Add lsfe to the hwcaps test Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250627-arm64-lsfe-v1-3-68351c4bf741@kernel.org> References: <20250627-arm64-lsfe-v1-0-68351c4bf741@kernel.org> In-Reply-To: <20250627-arm64-lsfe-v1-0-68351c4bf741@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=lH2UPYp6QCoEhr4YOD4G34RicJOUqUNXtxpfpE/H2hQ=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBoXtPvHdrwxtM6K55h9ibmBPuatpZ0f6ZPAQ+ii cvW6CW1ddaJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCaF7T7wAKCRAk1otyXVSH 0IQKB/0TOvdgLavdQtvO6QYDy5rzRWcJ2bv8jmEwtiA6ZLIXdyI8DSOJnxX6gJP6juqegfqPfTz iLvcK7uYQGzTs868wXkYC1LgUVJMX0f3gKSX0wJ6p8cGOduRvD5ZO3MB0ve0CdNP4hgxvaxM2ov Mdv05y+jtfzgNxJht4TI3X4PXwstUNqvphKdetij0jZiV/m+t5l6gLmYbkAJEoAz3kf+p0hkT8k Z9D17eNlB5ptmsmq13v1Qlnz9ya3zr1irOCD5nTMjkpRLXucuLLcrOCmKiwV0a8T7ZApbNJbXsR CHp5ZsrGCMS5LRNT1pH78PzHtRSp4Fpsr4huWOw/79Rkf+LD 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/selftests/arm64/abi/hwcap.c index 35f521e5f41c..9dfca2eb7c41 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -17,6 +17,8 @@ #include #include +#include + #include "../../kselftest.h" #define TESTS_PER_HWCAP 3 @@ -165,6 +167,18 @@ static void lse128_sigill(void) : "cc", "memory"); } +static void lsfe_sigill(void) +{ + float __attribute__ ((aligned (16))) mem = 0; + register float *memp asm ("x0") = &mem; + + /* LDFADD H0, H0, [X0] */ + asm volatile(".inst 0x7c600000" + : "+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 = "lse128", .sigill_fn = lse128_sigill, }, + { + .name = "LSFE", + .at_hwcap = AT_HWCAP3, + .hwcap_bit = HWCAP3_LSFE, + .cpuinfo = "lsfe", + .sigill_fn = lsfe_sigill, + }, { .name = "LUT", .at_hwcap = AT_HWCAP2, -- 2.39.5