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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 5D75AC433E1 for ; Wed, 19 Aug 2020 11:52:41 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 1726E22B49 for ; Wed, 19 Aug 2020 11:52:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="N6nTXSq+"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Psew0zq8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1726E22B49 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=7p5TQSlSpn7L/wti/5w5e/o2CalJKNLWjqLt0tGZOZE=; b=N6nTXSq+nda89XEu6g6vPuh41 F/7pFVxY1xbXuIpRvooaahn5zoA/AC5MTCe3TchQfPcFE9tnSacRXq6Gahq1WvDYjFukwclCDjISm 1EmoGrVlFN73gY+YtXp5P+F2RqgbXghmPNrEwRlq4B73KJ1zaSBpc4vVCW/LHAQxsdD5QodaUv/Xk BcrMNiwpxl6FsbnWWkq8NWKA0GQfDNsQd9ZCTU4eYV5J3NIvu6vfhqSqMIY/NHbk1CquI4/GIb6r4 nWTQ00kq5WEuH5M7eeve7TbVnXpaFSrxWzjYglfp8qpBGg1XTtKISuSAIPJ0MhnlKp/NjLOKi73af W1Je5QILQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8McJ-0005V7-Bp; Wed, 19 Aug 2020 11:50:55 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8McD-0005Sv-2D for linux-arm-kernel@lists.infradead.org; Wed, 19 Aug 2020 11:50:50 +0000 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 09DB92072D; Wed, 19 Aug 2020 11:50:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597837848; bh=UT+Vo3HFrZsD3uYH4LrsM9/ehPOpm9/+3nfx46Us6CA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Psew0zq8PtTaioqog9tb/B1bUXu7dz65j5VCyDmWjhYSspyHqbDy2l1/KE8u+z56+ o4m3dqvrWptzgxbO5U8b7KuQOc3RTgiPykdo+M/HeC3jAg7JKfPLS/7elfjFYY0kuV Jw6a5kgFQiCS6z1s9MO+jkzBlAniVtStbPS2tDE4= From: Mark Brown To: Will Deacon , Catalin Marinas , Shuah Khan , Dave Martin Subject: [PATCH v2 1/6] selftests: arm64: Test case for enumeration of SVE vector lengths Date: Wed, 19 Aug 2020 12:48:32 +0100 Message-Id: <20200819114837.51466-2-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200819114837.51466-1-broonie@kernel.org> References: <20200819114837.51466-1-broonie@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200819_075049_212563_0F4853E2 X-CRM114-Status: GOOD ( 17.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Brown , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org 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 Add a test case that verifies that we can enumerate the SVE vector lengths on systems where we detect SVE, and that those SVE vector lengths are valid. This program was written by Dave Martin and adapted to kselftest by me. Signed-off-by: Mark Brown --- .../selftests/arm64/fp/sve-probe-vls.c | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 tools/testing/selftests/arm64/fp/sve-probe-vls.c diff --git a/tools/testing/selftests/arm64/fp/sve-probe-vls.c b/tools/testing/selftests/arm64/fp/sve-probe-vls.c new file mode 100644 index 000000000000..b29cbc642c57 --- /dev/null +++ b/tools/testing/selftests/arm64/fp/sve-probe-vls.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2015-2020 ARM Limited. + * Original author: Dave Martin + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../../kselftest.h" + +int main(int argc, char **argv) +{ + unsigned int vq; + int vl; + static unsigned int vqs[SVE_VQ_MAX]; + unsigned int nvqs = 0; + + ksft_print_header(); + ksft_set_plan(2); + + if (!(getauxval(AT_HWCAP) & HWCAP_SVE)) + ksft_exit_skip("SVE not available"); + + /* + * Enumerate up to SVE_VQ_MAX vector lengths + */ + for (vq = SVE_VQ_MAX; vq > 0; --vq) { + vl = prctl(PR_SVE_SET_VL, vq * 16); + if (vl == -1) + ksft_exit_fail_msg("PR_SVE_SET_VL failed: %s (%d)\n", + strerror(errno), errno); + + vl &= PR_SVE_VL_LEN_MASK; + + if (!sve_vl_valid(vl)) + ksft_exit_fail_msg("VL %d invalid\n", vl); + vq = sve_vq_from_vl(vl); + + if (!(nvqs < SVE_VQ_MAX)) + ksft_exit_fail_msg("Too many VLs %u >= SVE_VQ_MAX\n", + nvqs); + vqs[nvqs++] = vq; + } + ksft_test_result_pass("Enumerated %d vector lengths\n", nvqs); + ksft_test_result_pass("All vector lengths valid\n"); + + /* Print out the vector lengths in ascending order: */ + while (nvqs--) + ksft_print_msg("%u\n", 16 * vqs[nvqs]); + + ksft_exit_pass(); +} -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel