From patchwork Tue Jan 25 00:11:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 537395 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 214BEC4707F for ; Tue, 25 Jan 2022 00:30:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S3409328AbiAYAZc (ORCPT ); Mon, 24 Jan 2022 19:25:32 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:52392 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2374506AbiAYARO (ORCPT ); Mon, 24 Jan 2022 19:17:14 -0500 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 dfw.source.kernel.org (Postfix) with ESMTPS id 181EA61548 for ; Tue, 25 Jan 2022 00:17:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1742AC340E5; Tue, 25 Jan 2022 00:17:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643069831; bh=P2l5Y5PDPDJcPc6k74icHUD6sRurj6ctKkCgiE7n3uE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RU2RemUbgkJKtf2h7tfji7rUdwquQcXRrtjNPlZf7pIGiwufmEmpFxgcoZOVfHil/ 4+QZhSuZ0JyBPIsYO2eOzhw57kyrNRYhty1cBVEPrBOAU8tChavhPevgKng0QFIinv rqcmpQU6uh7a+EowlpC9iQVmbEzs9CDkZHwdDDn9/J+NWwn5Y4aKLiTH8IOSHjdgpC 5zGo40vK2khaS3e+GIBu2g6+/dEIjICwbOmefgWno2dWOJew93KTUxnZFYOwyZNFnH vLj1ztsYei2s7BHG1UJaWNDoxlz6+FEcbypKgh9LL3X0TNZ2tPDiNwv4N8mMnbV8Yo QEMRRemhBDGWA== 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 v8 28/38] kselftest/arm64: sme: Add streaming SME support to vlset Date: Tue, 25 Jan 2022 00:11:04 +0000 Message-Id: <20220125001114.193425-29-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220125001114.193425-1-broonie@kernel.org> References: <20220125001114.193425-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1924; h=from:subject; bh=P2l5Y5PDPDJcPc6k74icHUD6sRurj6ctKkCgiE7n3uE=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBh70AXOiCWCuqdEhEwDeB0fuhFIzO/DqyGIULZWFjy SmyMmrCJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYe9AFwAKCRAk1otyXVSH0AUhB/ 9b3PEyYz/CRIXp/ANHoAkmzkevAVCOGSveg7NgEVmhBq+wvgtJXR1v4jTP+/1cehLaqlyS3ZaZqzuu VvqBwIlDnFru4Psw8jQckHn9TXHYZ0Nd4BxIDpBM9KB+N0grcuRMtXr5tKOjs3xCbrYVyWv44uhOgl 3AkUB8+4zQsDoZhI2k0w3UZ3EycKfDUCs/AUvoK4XZE2l/JlwdAjCecgPaeLnQpTEZlwTrooD8KLdK 0XWawaXbsdI159r/WpLo8Onl2A/IZhLP+5HfJvUiw6r9y3nR+J2UaAyKOYy8lvsXXoUmVP/gT6Wjtb 5syBdVFDsqFvbaVs6AgFampMBpQ7TM 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));