From patchwork Mon Jul 24 12:46:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13324724 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A11ADC001B0 for ; Mon, 24 Jul 2023 12:56:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231587AbjGXM4E (ORCPT ); Mon, 24 Jul 2023 08:56:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231303AbjGXMzk (ORCPT ); Mon, 24 Jul 2023 08:55:40 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92B124C27; Mon, 24 Jul 2023 05:51:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5D3416116E; Mon, 24 Jul 2023 12:50:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE3EFC433D9; Mon, 24 Jul 2023 12:50:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690203044; bh=o3F0gqwirOzTh8gwGkZMmsXM7Yu/yi+gPnGo/AGnFQM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=RKvbf5xFIOYmBfC9cHliD8dmfbRs+QpFurP/fbZe8s8WPczwbciazon6lfXd9pSXt rheOw+8XHarDOdaOF5ubRH8/iZsUGbGtNhSaDV1Qx4zDPLo6HFjKB6fCIj0yN2+zWj oCXS3GeKXc6x23k3PjdrPPXhENg2OPse9fbsyikKnvOksNaXle6MUIIkR7VJXplfqj D1aon++cZTfW+FDS9bsY+rkjpaFz1hWPZqy9btbsOm6ybbejCdq2gtNCgmx55APO6f wlr+K3ar2XUp+ugNJ5tb0YWCaAHRU1w0siIsTL98K1dL9appy8Gq6F1skQSUSNGDs4 BhqTm6IVAw7Ng== From: Mark Brown Date: Mon, 24 Jul 2023 13:46:22 +0100 Subject: [PATCH v2 35/35] kselftest/arm64: Enable GCS for the FP stress tests MIME-Version: 1.0 Message-Id: <20230724-arm64-gcs-v2-35-dc2c1d44c2eb@kernel.org> References: <20230724-arm64-gcs-v2-0-dc2c1d44c2eb@kernel.org> In-Reply-To: <20230724-arm64-gcs-v2-0-dc2c1d44c2eb@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 , Kees Cook , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy Cc: "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , 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 0.13-dev-099c9 X-Developer-Signature: v=1; a=openpgp-sha256; l=3085; i=broonie@kernel.org; h=from:subject:message-id; bh=o3F0gqwirOzTh8gwGkZMmsXM7Yu/yi+gPnGo/AGnFQM=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBkvnK8hNPDwiHC0iaEDryG+Mu2O7MgY2oLGt69EQIf sVXvDwmJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZL5yvAAKCRAk1otyXVSH0HvdB/ 48/ystdzGMlp9ZLcDce6kKIY6+miYLetihauHdnActGmdUw1giLgnaH6IqjXYWeEg4GQJpHOTRWlQ4 /vQNIe9Yd0Db/nuJcsciW0gzge3Wx/rCLMOsEWZdmAbsilSwEHZtzbSYdq+aAhJhycf0ouOKX5MfAp 3mc1Ec0oRKmASjn/G3juxGiZMPk++J5C0pY5RIjCoG/0NFY7QLfeNZj+tbVKhkfqt0T+IFdzwMwmrN uUUWXBdHUuHPfUlZCvbhXeUx+jY6fDajjRvpjAf3Nt66rsHWzkokYRzk3hBNYOg/NMaM7g8XYQAWeY iJsXxNG0RU05traqr4buJj6xOOYhku X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org 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. 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..7012f9f796de 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 72 +# 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 4328895dfc87..486634bc7def 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 9dcd70911397..f789694fa3ea 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 d63286397638..ea5e55310705 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