From patchwork Fri Feb 25 16:59:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 12760660 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 65A16C433EF for ; Fri, 25 Feb 2022 17:36:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243855AbiBYRhF (ORCPT ); Fri, 25 Feb 2022 12:37:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39796 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243850AbiBYRhB (ORCPT ); Fri, 25 Feb 2022 12:37:01 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 858E723A1A2 for ; Fri, 25 Feb 2022 09:36:27 -0800 (PST) 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 3C3A3B832CF for ; Fri, 25 Feb 2022 17:36:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6BD8FC340F4; Fri, 25 Feb 2022 17:36:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645810584; bh=cjWtOVTxWeUhc8tEXrG+oxZLQRfcD6x2BU4M+8l+kZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o8nj4P+qf4aKzzLlItPq3t4z7LaMTHrSAJOqPF9/4eEJgx2fCOodMO7fdh1eShRi9 VgWgqy/YVZzuEacZjrUxJI6qArNSpK8cE9DypWaO7oATFcuoFQPj1DNcs3yCFVszWf neBxwibEnbANsI2LoXKMl5SdYdlMrb1aSB1NC5EbmYaqLnrxWFmxCWW0w8dq/Gzd3c UwJJAMPxY9FPQ9uDwrInDhDsl7wmMepFyM4U4k2hmIf76Rt1hoNdLoZ+DLAzaKgL2i q5lcHhSn669f2MIxEb/y6B8ekznhwdPUi0CkAm5KKMUF4PipvvVovdlnaNYBvOFNDB 0cxnXGGvRPEiQ== 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 , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Mark Brown Subject: [PATCH v12 31/40] kselftest/arm64: sme: Add SME support to vlset Date: Fri, 25 Feb 2022 16:59:14 +0000 Message-Id: <20220225165923.1474372-32-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220225165923.1474372-1-broonie@kernel.org> References: <20220225165923.1474372-1-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/pANAwAKASTWi3JdVIfQAcsmYgBiGQriqSqngTRPNR7b870myCkuGHBQcIi35Nqt0awJ vjGk/iaJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYhkK4gAKCRAk1otyXVSH0B8XB/ 9MvXvfOpV3LWdAzOU8nerQK46Z2R7bEc6mqWEyExefq7fCEyVQFRJXeoH9xo7l4geqoqVynw4ctC/T 32yYJX6zArBJSgjiUZhew7jFhf/x60YAOTFdFXuqq3jbJwnPzjF4OO+IlrzfktiyjbS9F7Z7xwNEPW ph923E7NC+qUd4wEmcen/pC5shWJbXg+U8gMh/K2jfMAiLFG1sJ/OuGZDle3p/3+CJddsno5yyEJ3T Bprerc36k3qbTNCrHfDECVGKvhgquTJRo88TRTGmnIWzPdIpEEslzHwFdApHw6aRlccMlRct6iD0Wa JBWsoiCoJ0W5PLGBd2WATW+X5a58c4 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));