From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82800C4338F for ; Thu, 29 Jul 2021 15:20:27 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4D27960F46 for ; Thu, 29 Jul 2021 15:20:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4D27960F46 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=iekG7J4x2PBtn+4yE9ovPvoyd1SAdanpBcDRvdfQTOA=; b=Z8XFT28IKweIDB BOqIi/uZl5F85ORzi3iTzz25pqlPhMfb/Xme6DHzDKxGGECY1Q1vtMPCPZIBwSWSEJdhd8w6ipL/p md2w3vqic5oYuurkqSlGMa9i1yKxJXfb9F7ZxqTW5liOCL1yLXX1/Yf360O7lzN7qz6zUW00S1CIO sjJCpcchW/KNQ7hwJsU5mJpUl4du/uEqqAPYoqbMjDimlVxjFRbSX2N+umbrtXfaP8DZ+XntpMgeH OwBRgP0pP8LukmxfCoU2bn4t1s6tP74Y25VcxQVdRNM6FDW0NPVk7kd0tlhC/FhoiApo7qXtmuY+o 04h6K1zZN//z/LdQfCEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m97n5-004fYR-H0; Thu, 29 Jul 2021 15:17:43 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m97n1-004fXm-6t for linux-arm-kernel@lists.infradead.org; Thu, 29 Jul 2021 15:17:40 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4CF4760F23; Thu, 29 Jul 2021 15:17:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1627571858; bh=PL8vnhHrPx6WNSFPgJipiTrV5cz4ofT9TlJsPYljmiw=; h=From:To:Cc:Subject:Date:From; b=TZbZm4wf7DH4abusehxZJbx3Dw22jebxp3WWnolDI6NIZw8U0yFVDd6Z6cBQwxtrK UrLoy8amOJZP8dwK2OlARXZ6HJc/DZ2u21O+BaGaj3gK+7TT+B4wnoP4bKgymCl/Yo hkuz3mZqQ59GDfYfBwttbbFp6aKcIgSsKABscOjEE4iXVTm83zGaoMDBtO4NMJUOfB vOEteizcfZRsgnKmAZQrA/4UCLZQeY09nzdGXV9WT7l4nAmA3JmHnnvf6lJt4PY/fa 9vzLBFmGVF83474Tp8hxLeseqM0o6v4zzAV5sTKogjA4XAtI+v6UYGOCyEvH52EUZk 5Cl9KqfQq6cJA== From: Mark Brown To: Catalin Marinas , Will Deacon , Shuah Khan Cc: Dave Martin , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Mark Brown Subject: [PATCH v3 0/4] kselftest/arm64: Vector length configuration tests Date: Thu, 29 Jul 2021 16:15:14 +0100 Message-Id: <20210729151518.46388-1-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3010; h=from:subject; bh=PL8vnhHrPx6WNSFPgJipiTrV5cz4ofT9TlJsPYljmiw=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBhAsX72RqCtKvAZYQIAdFZX7IXpXKqBlIv1rq0Z6lf F/1dUYCJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYQLF+wAKCRAk1otyXVSH0DjHB/ 47mtmXDGlVEA0oRazEBVGNra0evz6jdQ8YQnLP7ktEkGsiDYQ1huae1EB6+WKxCH9y1VHxIaY7JsXO LgM/PDkzR/2Pf9BtbIsalTvrkOw9/X3BMZvWEPG29R04l1xgtG2REgyTN9lECCJ0B4dCFtp3hru0cT 1j/0y53XU9DXZ0BnE9djEFsQ6ML0FFwZdLh2R9MmBnGCS4zQmIWxq/vxO5tqHTML0lb/YxJQ6+1ZOn ptR6uma8QwDtHTzx3GeaMMU69TBoLJZr5SBVMfszJHTq7B0G3fs6OJkmia3K+5GJ52AoqRhkRk58bu YO9A40KeNRJfGwLbH2frAxsdV673yZ X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210729_081739_322605_FC185DC2 X-CRM114-Status: GOOD ( 15.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently we don't have full automated tests for the vector length configuation ABIs offered for SVE, we have a helper binary for setting the vector length which can be used for manual tests and we use the prctl() interface to enumerate the vector lengths but don't actually verify that the vector lengths enumerated were set. This patch series provides a small helper which allows us to get the currently configured vector length using the RDVL instruction via either a library call or stdout of a process and then uses this to both add verification of enumerated vector lengths to our existing tests and also add a new test program which exercises both the prctl() and sysfs interfaces. In preparation for the forthcomng support for the Scalable Matrix Extension (SME) [1] which introduces a new vector length managed via a very similar hardware interface the helper and new test program are parameterised with the goal of allowing reuse for SME. [1] https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/scalable-matrix-extension-armv9-a-architecture v3: - Add BTI landing pads to the asm helper functions. - Clean up pipes used to talk to children. - Remove another unneeded include. - Make functions in the main executable static. - Match the newline when parsing vector length from the child. - Factor out the fscanf() and fclose() from parsing integers from file descriptors. - getauxval() returns unsigned long. v2: - Tweak log message on failure in sve-probe-vls. - Stylistic changes in vec-syscfg. - Flush stdout before forking in vec-syscfg. - Use EXIT_FAILURE. - Use fdopen() to get child output. - Replace a bunch of UNIX API usage with stdio. - Add a TODO list. - Verify that we're root before testing writes to /proc. Mark Brown (4): kselftest/arm64: Provide a helper binary and "library" for SVE RDVL kselftest/arm64: Validate vector lengths are set in sve-probe-vls kselftest/arm64: Add tests for SVE vector configuration kselftest/arm64: Add a TODO list for floating point tests tools/testing/selftests/arm64/fp/.gitignore | 2 + tools/testing/selftests/arm64/fp/Makefile | 11 +- tools/testing/selftests/arm64/fp/TODO | 3 + tools/testing/selftests/arm64/fp/rdvl-sve.c | 14 + tools/testing/selftests/arm64/fp/rdvl.S | 10 + tools/testing/selftests/arm64/fp/rdvl.h | 8 + .../selftests/arm64/fp/sve-probe-vls.c | 5 + tools/testing/selftests/arm64/fp/vec-syscfg.c | 594 ++++++++++++++++++ 8 files changed, 644 insertions(+), 3 deletions(-) create mode 100644 tools/testing/selftests/arm64/fp/TODO create mode 100644 tools/testing/selftests/arm64/fp/rdvl-sve.c create mode 100644 tools/testing/selftests/arm64/fp/rdvl.S create mode 100644 tools/testing/selftests/arm64/fp/rdvl.h create mode 100644 tools/testing/selftests/arm64/fp/vec-syscfg.c base-commit: ff1176468d368232b684f75e82563369208bc371 -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel