From patchwork Wed Oct 27 18:44:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 12587843 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF71EC433EF for ; Wed, 27 Oct 2021 18:52:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D34061039 for ; Wed, 27 Oct 2021 18:52:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243646AbhJ0Syn (ORCPT ); Wed, 27 Oct 2021 14:54:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:34122 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240514AbhJ0Syn (ORCPT ); Wed, 27 Oct 2021 14:54:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3E6CD60234; Wed, 27 Oct 2021 18:52:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1635360737; bh=P2l5Y5PDPDJcPc6k74icHUD6sRurj6ctKkCgiE7n3uE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CDTCbm9FfW3duNMNtPDoMSYDGSVk5/G2CRPVxuFGacrpoFjv2szexlB6cqlUuuiia oU9lWl1k3zaTiy6iXPNUeaA6zM08Ky5mZJWmqiH7YvRhWzqqWLt1gcjK5ebVULXrWp 6/l6QDt2+Eag3cXIX9fgj3D9x+euayBAHa8LCSryy1r3T574fYhsDRkQIC+bPVFIVZ ojsYNQ5gtEPYGPYl4ZdxmcE5P+9+HDkn+xPBOPumrQZqXa8J8jRh4Xz+MI75QnUIJK jR8kfVZ9ZRhrdQRzNPZeOZia2cPnNqO7zhM7U1TdWp2HYf89I/3q04sSJr5PkPIASi 5NrE920qt2qZw== From: Mark Brown To: Catalin Marinas , Will Deacon , Shuah Khan , Shuah Khan Cc: Alan Hayward , Luis Machado , Salil Akerkar , Basant Kumar Dwivedi , Szabolcs Nagy , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Mark Brown Subject: [PATCH v5 30/38] kselftest/arm64: sme: Add streaming SME support to vlset Date: Wed, 27 Oct 2021 19:44:16 +0100 Message-Id: <20211027184424.166237-31-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211027184424.166237-1-broonie@kernel.org> References: <20211027184424.166237-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1924; h=from:subject; bh=P2l5Y5PDPDJcPc6k74icHUD6sRurj6ctKkCgiE7n3uE=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBheZ3+OiCWCuqdEhEwDeB0fuhFIzO/DqyGIULZWFjy SmyMmrCJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYXmd/gAKCRAk1otyXVSH0MtgB/ 9CIlNs2UIkMN+7gtfOd+ec6lStQBxWb/bV/6jc/f6iYqPOu5/rSf4cnH37e0jWb2o8BWvKTp/Zu3Nc pzu9gBfOboQUkJ+nnybS7rexA6cjnf1o+1e/Pr1miJx9WH7BMG7pdmx5tT8fojp8oM1LvbmiZYWMcn c2YD95sBMQw/+zG+lj7BALcfyPodRhifLkAbV2iFL4HQUWPaXZvjJlHVEoXSzz30SWF/e+RBNbzR/U VHfQJmJ77Wzi7gcEFPYXgX22BM9GcATShG+qB4kZ7vEI0XGiu2UfEjZ45eZsj3K40NXzYMD+9hEyFM cvFgR6hVHyLYKYrZkI/EfGGu6DpP9Q X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The Scalable Matrix Extenions (SME) introduces additional register state with configurable vector lengths, similar to SVE but configured separately. Extend vlset to support configuring this state with a --sme or -s command line option. Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/fp/vlset.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/vlset.c b/tools/testing/selftests/arm64/fp/vlset.c index 308d27a68226..76912a581a95 100644 --- a/tools/testing/selftests/arm64/fp/vlset.c +++ b/tools/testing/selftests/arm64/fp/vlset.c @@ -22,12 +22,15 @@ static int inherit = 0; static int no_inherit = 0; static int force = 0; static unsigned long vl; +static int set_ctl = PR_SVE_SET_VL; +static int get_ctl = PR_SVE_GET_VL; static const struct option options[] = { { "force", no_argument, NULL, 'f' }, { "inherit", no_argument, NULL, 'i' }, { "max", no_argument, NULL, 'M' }, { "no-inherit", no_argument, &no_inherit, 1 }, + { "sme", no_argument, NULL, 's' }, { "help", no_argument, NULL, '?' }, {} }; @@ -50,6 +53,9 @@ static int parse_options(int argc, char **argv) case 'M': vl = SVE_VL_MAX; break; case 'f': force = 1; break; case 'i': inherit = 1; break; + case 's': set_ctl = PR_SME_SET_VL; + get_ctl = PR_SME_GET_VL; + break; case 0: break; default: goto error; } @@ -125,14 +131,14 @@ int main(int argc, char **argv) if (inherit) flags |= PR_SVE_VL_INHERIT; - t = prctl(PR_SVE_SET_VL, vl | flags); + t = prctl(set_ctl, vl | flags); if (t < 0) { fprintf(stderr, "%s: PR_SVE_SET_VL: %s\n", program_name, strerror(errno)); goto error; } - t = prctl(PR_SVE_GET_VL); + t = prctl(get_ctl); if (t == -1) { fprintf(stderr, "%s: PR_SVE_GET_VL: %s\n", program_name, strerror(errno));