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s=arc-20220608; d=hostedemail.com; t=1700843777; a=rsa-sha256; cv=none; b=NBRDL91cXWEi29bAELlTMJ8oId9VQ5WO5xWdu9lM/sZpijbs9TKFlJ0hzLWd0rKy3dsi/k 5P7I87CnSEOmu52JuzsC0sqSuQBeDzsPl7cewSZGF8Z1u99KlNoqNV8JT1YuoRsWkEJLwt h0hhoROGhFA9OPC841ZlqcCHbRrFoaY= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=none; spf=pass (imf02.hostedemail.com: domain of joey.gouly@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=joey.gouly@arm.com; dmarc=pass (policy=none) header.from=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0253D1BA8; Fri, 24 Nov 2023 08:37:03 -0800 (PST) Received: from e124191.cambridge.arm.com (e124191.cambridge.arm.com [10.1.197.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4BEC63F73F; Fri, 24 Nov 2023 08:36:14 -0800 (PST) From: Joey Gouly To: linux-arm-kernel@lists.infradead.org Cc: akpm@linux-foundation.org, aneesh.kumar@linux.ibm.com, broonie@kernel.org, catalin.marinas@arm.com, dave.hansen@linux.intel.com, joey.gouly@arm.com, maz@kernel.org, oliver.upton@linux.dev, shuah@kernel.org, will@kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, James Morse , Suzuki K Poulose , Zenghui Yu Subject: [PATCH v3 22/25] kselftest/arm64: add HWCAP test for FEAT_S1POE Date: Fri, 24 Nov 2023 16:35:07 +0000 Message-Id: <20231124163510.1835740-23-joey.gouly@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231124163510.1835740-1-joey.gouly@arm.com> References: <20231124163510.1835740-1-joey.gouly@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 3C26A80019 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: x46odb39n364g9da6jtqqonfioj6myo7 X-HE-Tag: 1700843776-696433 X-HE-Meta: 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 Uvy8rBxw Ea15bcTVIiRTc1EKR/VFqY5kt670OVQcI6r6ulz3ebLFkVvMkynnxcq3+OZlYLZaTCF1ihEhLh423kD6lx79oVfUTX/rz+Z4y0C24kdHwnpq9pvAiVpvbkHK+iiUGolgXTlPoPK7TnCp0zDbUDtoP+Osau0d3/CYjzEkIJLRgIglu0XmXXe0bkAccvIjfCq2PgP6Q+eSSsxDJBqpzbzqB3nCOnmoDIspZK82IQYwAFydM+U706zJPsICl2iEb/JnBvSwKnIZIXnk936k= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Check that when POE is enabled, the POR_EL0 register is accessible. Signed-off-by: Joey Gouly Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Brown Cc: Shuah Khan --- tools/testing/selftests/arm64/abi/hwcap.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 1189e77c8152..9ee7b04f3fbb 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -115,6 +115,12 @@ static void pmull_sigill(void) asm volatile(".inst 0x0ee0e000" : : : ); } +static void poe_sigill(void) +{ + /* mrs x0, POR_EL0 */ + asm volatile("mrs x0, S3_3_C10_C2_4" : : : "x0"); +} + static void rng_sigill(void) { asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0"); @@ -426,6 +432,14 @@ static const struct hwcap_data { .cpuinfo = "pmull", .sigill_fn = pmull_sigill, }, + { + .name = "POE", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_POE, + .cpuinfo = "poe", + .sigill_fn = poe_sigill, + .sigill_reliable = true, + }, { .name = "RNG", .at_hwcap = AT_HWCAP2, -- 2.25.1