From patchwork Mon Oct 9 12:09:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13413632 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 A65EBE95A9B for ; Mon, 9 Oct 2023 12:18:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346500AbjJIMSJ (ORCPT ); Mon, 9 Oct 2023 08:18:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346490AbjJIMRu (ORCPT ); Mon, 9 Oct 2023 08:17:50 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44B412D79; Mon, 9 Oct 2023 05:15:00 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C6D4BC433B6; Mon, 9 Oct 2023 12:14:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696853700; bh=o3F0gqwirOzTh8gwGkZMmsXM7Yu/yi+gPnGo/AGnFQM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=H6L2zm3OMsRyXQZfw5aCB2cQkw9G1wWr2dacwbrbjZXZPIvYK/weMVGb/cCzZKiC7 ZWZE+3KXbORqpB/LvrPa2XKaZcYAjAFSMj4QWQFzw3QNTXKDYCgERhCXIRuk6Sjumc zB5fHswdhfFPA4MwUbxsr8ag7wUXWXMvOwCfogAugBxO+lLIGF8fBuDPcfcrWt9bL/ UfwoJNGMVjZIYaA2ZzmhBY6HI7q3jqJtDEajWrgfdPB+xTlJBBPSLdojTFkIx10j12 ZNBSMSXaS2qYh9yW/wlBi/EargZA/4mUtrGrQO91UPNkTiaKE8IffZTX8D3vhoHTR8 OG9JYN3wJLxnw== From: Mark Brown Date: Mon, 09 Oct 2023 13:09:12 +0100 Subject: [PATCH v6 38/38] kselftest/arm64: Enable GCS for the FP stress tests MIME-Version: 1.0 Message-Id: <20231009-arm64-gcs-v6-38-78e55deaa4dd@kernel.org> References: <20231009-arm64-gcs-v6-0-78e55deaa4dd@kernel.org> In-Reply-To: <20231009-arm64-gcs-v6-0-78e55deaa4dd@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 , Florian Weimer , Christian Brauner , 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-0438c 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/pANAwAKASTWi3JdVIfQAcsmYgBlI+2vG7XbuVEpS5pxDaAIrEX013t37tEVAfRK24qD lhEdNXWJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZSPtrwAKCRAk1otyXVSH0O9gB/ 9FoGr0eST8WBd+FIsUjhsE3d9wYovTCREYw/+Ayy30NkoVgB2HmjZh7K+hb1YN/LMp4ABI6gQv9m7U CD4WfBwvZ66QhtkrTfCIAGZpIQukSOsbVk6gdZYFnG7YW+e8eW3WDSRw9MC8WvY4S8Se1kCKCSUCeb Qz3siqGYszHBGhCUXtGLknYBqrkRfkRcrLwD25GetvYNDznn9zMYXqk6yRPx0AfSoebviB+WXqPi2L dbp5/fysyysuQlZh6LF/DXv7rc3dApbApo0DQVkQsmIg1LX6vsrhlBVTV2UmFdpn3sqVmIl8CtGlBA iYNaW3vGcLHl9DSvc6WgiC/Kg5uRyg X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@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