From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0D3883B8D78; Mon, 27 Apr 2026 12:04:07 +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=1777291449; cv=none; b=KeohPGCJ4GAZh7iF4vBJo2EzsshlltpQoVng9gXa9sZjsdikObWluVciUb20dro5gllO1L+1MFxHvOyapqCOcG5gYSvxLo2g4nkTzPrIVME8dZcnYbUx7j1Ds/U8SALhq4SDZtyA1JipHeowikhNJ3rdy9VdkTuJyavSGJuIIdA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777291449; c=relaxed/simple; bh=ldcRjHyX3ikGZr7TkP8sF4TKynkn1s47t2JOAAGYL7E=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=XiEsPdtWPxcbsUKqCxySlyk2IrY+B2UiKNrCTRvWh+wY3CRCdzZu55wYHHHxqAcfI3/yjGndz8JEZxQbSwfaZ027vR4FPTxXAuJYzU70ih4HU7czdyCABoefLV/ZR+snd4z0nbICY/+turiBdJPcn3TnSLyLjAgiGCT5vW2rQiM= 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; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Miik+htN; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Miik+htN" 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 023032437; Mon, 27 Apr 2026 05:04:02 -0700 (PDT) Received: from localhost.localdomain (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DA85A3F62B; Mon, 27 Apr 2026 05:04:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1777291447; bh=ldcRjHyX3ikGZr7TkP8sF4TKynkn1s47t2JOAAGYL7E=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Miik+htNqUHD8vM0xx8JqEjpijJJ/3fmWSdcOzhiUxUJX8LFyjsOuhSbRJ6QTtLCF x98ojX4IXXUjskp5T8b8iUrxWEOkFCf6JjJnIoySQSzjTKSt/V1TDI4v64H/FLFMrg 9YAfKQxrgNv/njWtR81B9dfN559OxTMw8e1GvVXQ= From: Kevin Brodsky Date: Mon, 27 Apr 2026 13:03:36 +0100 Subject: [PATCH v2 4/5] kselftest/arm64: Move/add POE helpers to test_signals_utils.h 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: 7bit Message-Id: <20260427-poe_signal-v2-4-2bd9d6f16ab4@arm.com> References: <20260427-poe_signal-v2-0-2bd9d6f16ab4@arm.com> In-Reply-To: <20260427-poe_signal-v2-0-2bd9d6f16ab4@arm.com> To: linux-arm-kernel@lists.infradead.org Cc: Kevin Brodsky , Andrew Morton , Catalin Marinas , "David Hildenbrand (Arm)" , Joey Gouly , Mark Brown , Shuah Khan , Will Deacon , linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1777291437; l=2017; i=kevin.brodsky@arm.com; s=20260427; h=from:subject:message-id; bh=ldcRjHyX3ikGZr7TkP8sF4TKynkn1s47t2JOAAGYL7E=; b=r24fR4zGfLVsqC3/BUO4grJOZYk9vXPaWiQGFFkqbpPG0E3bWUZYasLlLJnROsUstdfZcv6rz l5q3dEkmPbMB4V4cqfkWkRZN/jzikVM6ShcRdFYHENfVT5ULyQjmCrh X-Developer-Key: i=kevin.brodsky@arm.com; a=ed25519; pk=N2QG+eJKrvkNovwhhwJhnJ4+ScVfsGCHldmqLfcMTFs= In preparation to adding further POE signal tests, move get_por_el0() to test_signals_utils.h and add set_por_el0(). Reviewed-by: Mark Brown Signed-off-by: Kevin Brodsky --- .../testing/selftests/arm64/signal/test_signals_utils.h | 16 ++++++++++++++++ .../selftests/arm64/signal/testcases/poe_siginfo.c | 15 --------------- 2 files changed, 16 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.h b/tools/testing/selftests/arm64/signal/test_signals_utils.h index 36fc12b3cd60..2c7b8c64a35a 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.h +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.h @@ -57,6 +57,22 @@ static inline __attribute__((always_inline)) uint64_t get_gcspr_el0(void) return val; } +#define SYS_POR_EL0 "S3_3_C10_C2_4" + +static inline uint64_t get_por_el0(void) +{ + uint64_t val; + + asm volatile("mrs %0, " SYS_POR_EL0 "\n" : "=r"(val)); + + return val; +} + +static inline void set_por_el0(uint64_t val) +{ + asm volatile("msr " SYS_POR_EL0 ", %0\n" :: "r"(val)); +} + static inline bool feats_ok(struct tdescr *td) { if (td->feats_incompatible & td->feats_supported) diff --git a/tools/testing/selftests/arm64/signal/testcases/poe_siginfo.c b/tools/testing/selftests/arm64/signal/testcases/poe_siginfo.c index 36bd9940ee05..e15fedf4da6e 100644 --- a/tools/testing/selftests/arm64/signal/testcases/poe_siginfo.c +++ b/tools/testing/selftests/arm64/signal/testcases/poe_siginfo.c @@ -21,21 +21,6 @@ static union { char buf[1024 * 128]; } context; -#define SYS_POR_EL0 "S3_3_C10_C2_4" - -static uint64_t get_por_el0(void) -{ - uint64_t val; - - asm volatile( - "mrs %0, " SYS_POR_EL0 "\n" - : "=r"(val) - : - : ); - - return val; -} - int poe_present(struct tdescr *td, siginfo_t *si, ucontext_t *uc) { struct _aarch64_ctx *head = GET_BUF_RESV_HEAD(context); -- 2.51.2