From patchwork Wed Aug 28 23:27:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 823734 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 D952B1AF4EF; Wed, 28 Aug 2024 23:33:12 +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=1724887993; cv=none; b=gmPx4MYybq9LkF/kwBBQJXSAbw9TSCh2HgUwnX81hhLtJ+K2n9JBVC3TgYzphIZGb0/XhFBbPdFo6u2EQ+aAqHyA9PkcjnvOHIJJWWntVt9CDwvXIqEAsJ3wSk9Ea7uETarrONQkm1Af8Rev1wgp3kabKa6fIyAIyo/y5C82h2M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724887993; c=relaxed/simple; bh=YYz6vJzvFivBjzQl/oYVfPbzMadH/24Qr7CyuKANnYA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=KUjeL9vpJR1+S590iB0N5bEHeugec5kMbBes6EMBYzuxJgjraTKuxTetA5JY3W1BAIyKdaIxhRj9blXlypZ6KIPHvrv1w5eEdqx6Yl1JCUMl2/VBVykMp5YfkDWsW34yzRFnxqq+PQp3TVD2UoZvyCTZjPZ1n5gY26bQWBuXGlc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ae63hpQc; 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="Ae63hpQc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02EF9C4CEC8; Wed, 28 Aug 2024 23:33:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724887992; bh=YYz6vJzvFivBjzQl/oYVfPbzMadH/24Qr7CyuKANnYA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Ae63hpQcyPKZ+OyB2jCjf7Q3AnoM5TNRSI8R8RYzDv9BC7hP+nt1Q2SM1NKpAHqOI c5KrwNMgLPQv1anl0o/KtpOeyQsef3CuzOu7zdTdhUp7lugl2BT7E7dCzli6x7cujp JtM4I961TOcW0h32E5nGs3SR40TblIRzXj6Om3fwnG90aP0aSD1U/6bvJEDFMw3fr0 qdZjuRpcEAadGa1QiPHS7SaEYEeoOu8eyc+1FAw6z9w2KQkro5OUbQGb2NS1PJRpYa DE+9MhaHU8EeU42cz4Kv34RjFsAPkUZsAkrXA7zyJ3oRtQYCT+H+mJRllbFrcd0w3T O+YnuJQAVDQBg== From: Mark Brown Date: Thu, 29 Aug 2024 00:27:54 +0100 Subject: [PATCH v12 38/39] kselftest/arm64: Enable GCS for the FP stress tests Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240829-arm64-gcs-v12-38-42fec947436a@kernel.org> References: <20240829-arm64-gcs-v12-0-42fec947436a@kernel.org> In-Reply-To: <20240829-arm64-gcs-v12-0-42fec947436a@kernel.org> To: Catalin Marinas , Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , Kees Cook Cc: "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , Ross Burton , Yury Khrustalev , Wilco Dijkstra , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Mark Brown X-Mailer: b4 0.15-dev-37811 X-Developer-Signature: v=1; a=openpgp-sha256; l=3151; i=broonie@kernel.org; h=from:subject:message-id; bh=YYz6vJzvFivBjzQl/oYVfPbzMadH/24Qr7CyuKANnYA=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBmz7KWyGmLb/5LuHUW2EcxIQm9C/uO5snWMi3VUsMB 6zop08iJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZs+ylgAKCRAk1otyXVSH0A8fB/ 90Be8aaxkQLS9HasukOKepFvom/7UIx7M/ptMK2Zg+RPc2bfuLZarXTa2aeVuabD46J6eJ3drBNTZe UzB9H/Y9Hy3YYvuXNFbxru531W0pnyk7IrRxZcIR9nQFYMukgwApRPRHUzGkt2niM9+7zKoZD3lrwW FqmHWndmLgnmzOxQh8OJLfLLjZ6ZplaVJLfh+sVB5F5KJ62HidxsYJvu58cK+n+zWkSc/LKMHBMvtS dUMHZhi3Mdju6Y87YA8T/3rxBWrIuRrC5T5QkfYlfclL2RgPU78UVX6ZyVULtKBp8IcW3dGsi6wrYp qv/N0YcGoAy2dscZaaeXyy+t1pA3wz X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB While it's a bit off topic for them the floating point stress tests do give us some coverage of context thrashing cases, and also of active signal delivery separate to the relatively complicated framework in the actual signals tests. Have the tests enable GCS on startup, ignoring failures so they continue to work as before on systems without GCS. Reviewed-by: Thiago Jung Bauermann Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/fp/assembler.h | 15 +++++++++++++++ tools/testing/selftests/arm64/fp/fpsimd-test.S | 2 ++ tools/testing/selftests/arm64/fp/sve-test.S | 2 ++ tools/testing/selftests/arm64/fp/za-test.S | 2 ++ tools/testing/selftests/arm64/fp/zt-test.S | 2 ++ 5 files changed, 23 insertions(+) diff --git a/tools/testing/selftests/arm64/fp/assembler.h b/tools/testing/selftests/arm64/fp/assembler.h index 9b38a0da407d..1fc46a5642c2 100644 --- a/tools/testing/selftests/arm64/fp/assembler.h +++ b/tools/testing/selftests/arm64/fp/assembler.h @@ -65,4 +65,19 @@ endfunction bl puts .endm +#define PR_SET_SHADOW_STACK_STATUS 75 +# define PR_SHADOW_STACK_ENABLE (1UL << 0) + +.macro enable_gcs + // Run with GCS + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, PR_SHADOW_STACK_ENABLE + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 +.endm + #endif /* ! ASSEMBLER_H */ diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S index 8b960d01ed2e..b16fb7f42e3e 100644 --- a/tools/testing/selftests/arm64/fp/fpsimd-test.S +++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S @@ -215,6 +215,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index fff60e2a25ad..2fb4f0b84476 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -378,6 +378,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // Irritation signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S index 095b45531640..b2603aba99de 100644 --- a/tools/testing/selftests/arm64/fp/za-test.S +++ b/tools/testing/selftests/arm64/fp/za-test.S @@ -231,6 +231,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/selftests/arm64/fp/zt-test.S index b5c81e81a379..8d9609a49008 100644 --- a/tools/testing/selftests/arm64/fp/zt-test.S +++ b/tools/testing/selftests/arm64/fp/zt-test.S @@ -200,6 +200,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT