From nobody Thu Oct 2 09:16:42 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 3CB722E7BAA; Thu, 18 Sep 2025 19:44:33 +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=1758224674; cv=none; b=cLd4aZI86xvSep6U9bXfFWb/DSWnj5R/NX9A36MdiyFsV3ArL7LUOUA1FCfeJfbZBzEIqMFNjb9dxncvYWMRYWW8nAOtiXetT2kmV2kUsIFuuPyDE2WI9scBxu9qcBAMVvnH01NkekkgBt7XHaz0/UtryoHG42DG/by2SMnQQdc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758224674; c=relaxed/simple; bh=UMBZVNHnp7TR0KnOMakwtyW6HfF9SvkIdo+R8of+svU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=HHg26Z5pLfKEId/qN7Z07XzCZuhQY7Occ8BGeizlVvi2wTJmiqdwQBB8m0GV2ZeuNNWK7ebCO5vGyWsbiocv7ZX/9JcQ1fz4Oerbp63T8OEfZ0HLrV9xpydcd8c5PpsWQKXgprLB05iYI3rEYY79mgv388vmvjP6bXqdmk5hOnI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bUqtbVT+; 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="bUqtbVT+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FCDFC4CEFA; Thu, 18 Sep 2025 19:44:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758224673; bh=UMBZVNHnp7TR0KnOMakwtyW6HfF9SvkIdo+R8of+svU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=bUqtbVT+0haYvdTHb6blpWAGsyWfD6JaY7UKgBi4jOSopmDbJZHeCxFoFu+/fht0G N6gsaEeuXYxUNx19h3M20zlrQSQvN/OOpS7UNh+0vG8Atrw4GeFRl23UBOHHnD0OPN sQwQu96Xbick4kY2JWoZuAwyghOmjSAmasf/n/qttCnRE/bjEqTF8y+Bz4ODB2N9C8 cf2einhRiGSWw5T0zRs9DOHxZkYqbWMyGqGFegKcqdGEBgQyjSYzcJcDgfXQnVdRt/ HoYZmNvUfikhEe256UpFX4Y98kGQpyREMS0OqFmDyQuV64M0UU9+aiDL3PQGBwyc0o cezmwQxnZIilg== From: Mark Brown Date: Thu, 18 Sep 2025 20:42:07 +0100 Subject: [PATCH v4 2/2] 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: <20250918-arm64-lsfe-v4-2-0abc712101c7@kernel.org> References: <20250918-arm64-lsfe-v4-0-0abc712101c7@kernel.org> In-Reply-To: <20250918-arm64-lsfe-v4-0-0abc712101c7@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-56183 X-Developer-Signature: v=1; a=openpgp-sha256; l=1389; i=broonie@kernel.org; h=from:subject:message-id; bh=UMBZVNHnp7TR0KnOMakwtyW6HfF9SvkIdo+R8of+svU=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBozGEYpaN8KxqpqbIpix7Q/eUM4BVEie2c349je H2Lt7wGNx2JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCaMxhGAAKCRAk1otyXVSH 0Ok9B/4v32pVhq4xEn2WtqPBqKENxP6kucAsLZtwxf5iwOSrCiG9KVi/6YaIAC1kx/sjTIVaD9L mKEAYyfwg5c8BxtzTnuaHiK0R5mccV5TOEWPCLDMGeYsCfAVxI+uVBIUJ2Mbg7tyxUylzzmbwg6 8Vn7mCxnstbDXzMVPy5OS73MNdRuJjzIsVe1dmV9cd1Fa/1eOBriDvdJYymtpApHcWiI5N0u5fJ m+NBZORlDiLa9d86fk+c7KVVLr5ahog42FmW/pYrdJHXOkWKbtFlyrW0SuXfcxYsmX53b4Fa4iU JF8LnIEBKNjJysOhlR0xW4jvKcBXNGNJdual7Un8QJbbKubP 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..0f9a64932481 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; + register float *memp asm ("x0") =3D &mem; + + /* STFADD H0, [X0] */ + asm volatile(".inst 0x7c20801f" + : "+r" (memp) + : + : "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 2.47.2