From patchwork Thu Aug 22 01:15:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13772355 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 5720211712; Thu, 22 Aug 2024 01:23:50 +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=1724289831; cv=none; b=rta2EKHvqiUBqHDM+Qftej+wCEnolZHg/xjApVP4dcydULxuE/RcYD+7tLJLH5pz18vpk4NNmTUhCieTav6ZF3B7mq/s+ySWl7vMzKk0CWKWaIJ5wxRRtxuhtp7Wr8eZr1kMqt0xEePCGF8q4iKpzYdqutUquUiFteQiALcj3DM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289831; c=relaxed/simple; bh=YYz6vJzvFivBjzQl/oYVfPbzMadH/24Qr7CyuKANnYA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=exEhhupk0AX7GKuHzyUNkb2P4mrb2PHL2Awbri9+TZwFR8Y/yL6c0DExMnLgAYIPsr0EQmfjohTWdC7l82kFCXGdlPHh325Sb8Op8DW4eOIJmeT0F0hOs1rBY1WxEFe5Opvg4Pe7kVGWethNPhr5LUzpsnSsl0AOKpvc/wqzOjY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=R9zzjzMV; 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="R9zzjzMV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 599F6C4AF11; Thu, 22 Aug 2024 01:23:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724289830; bh=YYz6vJzvFivBjzQl/oYVfPbzMadH/24Qr7CyuKANnYA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=R9zzjzMV70LpzGfyvhuJYpabIKzUcvQf9MHXQHntpuj1/nRe8ImXDZhtco4U+GIWD H/L1Qr3+s6la2xkwMiwv798l3hafjyZcYnb5FNpK192mgBXdYzu+Bz8JO+OMCH0tl0 71TA36KOD9qaSkQfQoJhVnSvi5LbUD0bV8A8LPKdlGPGXVs18IJe6gCLyZ7N9g0SOe EFr4BQDg2i2AW1eBJ2U1sOPB0uc5gGjI9YFKmUdRUTppOPzjjYeyns0b5abb8cLyWy YIgowAAhiLYAlPnSvCEV/7XHRUHMT9JceVGBH/s3O9yv9jhRwLAHZX5xJ7XjUNeJGF 5LICH7Hd2wa/g== From: Mark Brown Date: Thu, 22 Aug 2024 02:15:41 +0100 Subject: [PATCH v11 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: <20240822-arm64-gcs-v11-38-41b81947ecb5@kernel.org> References: <20240822-arm64-gcs-v11-0-41b81947ecb5@kernel.org> In-Reply-To: <20240822-arm64-gcs-v11-0-41b81947ecb5@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/pANAwAKASTWi3JdVIfQAcsmYgBmxpFB+A0WlwPqvXouPNNAgEUHNQxzIPyeeifSv05V CgED102JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZsaRQQAKCRAk1otyXVSH0IFqB/ 9O2YNN8PESOQ8WpkX3izDmeZcNEc1mXsl6dcYRSuYE00J6cl60UTAoBD2c+1iffUZZvHYOq08x9TYH NkZIB/U7bSX8x3OqTPM6omT3YbnF/GLaFbmWaz+J246wqay/dsccm5RWIqd7KpL36dESEg81pFOePd iMbsQP0jR6Oy9Pr/a8zLX0C8z851QwxecQ2bDMezJ8pTuATnSOHt8TymMguDghQvxihb/rrd9XsoE6 OYyEldzAk187hNE56iYGryyL5b+P6sxtmplrhEfvR7kdK1liKjgs9r35hP5hRyhEJPyfpoJqyfcIYb cpqV42uhrlGB8tPJHDynJyu4CRAyZ2 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