From patchwork Tue Apr 19 11:22:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 564614 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 07DCDC433FE for ; Tue, 19 Apr 2022 11:25:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242566AbiDSL2X (ORCPT ); Tue, 19 Apr 2022 07:28:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351486AbiDSL2M (ORCPT ); Tue, 19 Apr 2022 07:28:12 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E4BEB240BD for ; Tue, 19 Apr 2022 04:25:28 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id A1E6CB81851 for ; Tue, 19 Apr 2022 11:25:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3C8AC385AF; Tue, 19 Apr 2022 11:25:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1650367526; bh=cjWtOVTxWeUhc8tEXrG+oxZLQRfcD6x2BU4M+8l+kZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WbCHkXPcCl/JTIHv7H6D4t/PKMHDROEm+OSBnLnPCrnLgUF9jV+g2hiKNrWejmAPt Hb3nsrH9suPGGaqP/SEQVygo4u0W9Bci1lxoh/il4QOHGD6azs6YDbuq0Ni4hu6DnH iRFGeuXWyRO7MN2O1l7/uTqb3EtSkvtM9Vlunm4KzI4Hyiy1JhdYZxy810aAV1h9of NX3B6b+60jRN7Tb3f0jRksIPSfGCj7V4uM4gRK/qr0hhhYPDDMDykK7+rEnTlKyxqq 2ITkuB316RzCrDZxPci1OHnD9DLFzDcZWY+G0mB/xTz1p+r1hL3b5P/Db6SJEYUeHJ gxAUAFdTiwzlQ== From: Mark Brown To: Catalin Marinas , Will Deacon , Marc Zyngier , Shuah Khan , Shuah Khan Cc: Alan Hayward , Luis Machado , Salil Akerkar , Basant Kumar Dwivedi , Szabolcs Nagy , James Morse , Alexandru Elisei , Suzuki K Poulose , Luca Salabrino , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Mark Brown Subject: [PATCH v14 29/39] kselftest/arm64: sme: Add SME support to vlset Date: Tue, 19 Apr 2022 12:22:37 +0100 Message-Id: <20220419112247.711548-30-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220419112247.711548-1-broonie@kernel.org> References: <20220419112247.711548-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2030; h=from:subject; bh=cjWtOVTxWeUhc8tEXrG+oxZLQRfcD6x2BU4M+8l+kZw=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBiXpt+qSqngTRPNR7b870myCkuGHBQcIi35Nqt0awJ vjGk/iaJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYl6bfgAKCRAk1otyXVSH0E1GB/ 4vmgxpORent6+IAR//5AmtR35fHQ+u78tLBXV0HRKy39z92CnCgzxqrUnGfwcTPMwckGpDuvnHm0Jo /4o2AF04H8GhKl781zZuGeriNoxU1VeNhzqoDn2BBEMqGPg+kv2um1Jf8T36XcXIYfyu3xXMrVHkPR x5Vi5H5SZ1t6PkTi1BD5406vUapGh8w6oE+hfry8JEhoqJqqyR3yBvCgDrUeUkU4C/qvkSEf7cCaLp niCwTK63suHwNBXJLQfIwc4zhHk4acd8lulrcZ4ij+CQWbBlJp4b5jtpv38Do+lh9LwTnJNfAytUHd ILrrhWxBpJvXujytOpH2cf1rpDE5HC 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 Reviewed-by: Shuah Khan Acked-by: Catalin Marinas --- 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));