From patchwork Thu Aug 22 15:11:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joey Gouly X-Patchwork-Id: 821967 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 67A1E1CC8A6; Thu, 22 Aug 2024 15:13:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724339602; cv=none; b=Oqch+8B4lToffNN+eFp8Y+mXlWJeU9pVYCq54o5QKrwpbUU5eFoK6E/7oOv8qOlzwS17Lyq2fHNe/BQ1PUXefEaW7k3XQ2JadrfCihLgeIptH3Gkwh9gWhBjoc2me/PtC+ed2F6bqPd18sQTQL3cooxlChb4RAIiWZlvCKQZ+Jg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724339602; c=relaxed/simple; bh=ZNoS+hPzOtH2iuO7pv40fuHbte5CnSjSCsgz6rR2puM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=rnOqTlbZ+ALd+bK8G5FdECTm43KxwkLFxCdFmrNKJMkpOdPhyKZgGUwoHw7kpjJ2MVWAb8ClnGvVAxolXgGZlUcJtJwifNZAxnFaxWfuAtMzvZcW+6lx3OpmXvKcwwcRnkHvLAtPdTuCSCAuLpUcWKFEeM8ZaczMThr5D8wp27s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=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 2889E1688; Thu, 22 Aug 2024 08:13:47 -0700 (PDT) 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 0A2683F58B; Thu, 22 Aug 2024 08:13:16 -0700 (PDT) From: Joey Gouly To: linux-arm-kernel@lists.infradead.org Cc: nd@arm.com, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, anshuman.khandual@arm.com, bp@alien8.de, broonie@kernel.org, catalin.marinas@arm.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, joey.gouly@arm.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, skhan@linuxfoundation.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org Subject: [PATCH v5 27/30] kselftest/arm64: add HWCAP test for FEAT_S1POE Date: Thu, 22 Aug 2024 16:11:10 +0100 Message-Id: <20240822151113.1479789-28-joey.gouly@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240822151113.1479789-1-joey.gouly@arm.com> References: <20240822151113.1479789-1-joey.gouly@arm.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 Reviewed-by: Mark Brown --- tools/testing/selftests/arm64/abi/hwcap.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git tools/testing/selftests/arm64/abi/hwcap.c tools/testing/selftests/arm64/abi/hwcap.c index d8909b2b535a..f2d6007a2b98 100644 --- tools/testing/selftests/arm64/abi/hwcap.c +++ tools/testing/selftests/arm64/abi/hwcap.c @@ -156,6 +156,12 @@ 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"); @@ -601,6 +607,14 @@ 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,