From patchwork Tue Dec 27 13:06:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 637167 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 DD9DAC46467 for ; Tue, 27 Dec 2022 13:07:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229789AbiL0NHV (ORCPT ); Tue, 27 Dec 2022 08:07:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51188 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231651AbiL0NG4 (ORCPT ); Tue, 27 Dec 2022 08:06:56 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BEF5277; Tue, 27 Dec 2022 05:06:55 -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 32A9AB8101D; Tue, 27 Dec 2022 13:06:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 42AB9C43392; Tue, 27 Dec 2022 13:06:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672146412; bh=RNcNgyi+XWeNF+WSinst8npBEXg52AmbeM5w3G+O9YA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=X1mXjweTTYK8xa39s4cz6r7MbA+2CJZyqC5RKsj+ACMyyIOmfCUJUgL5+UZb4Dul4 fGaNKbhxAIXxZ+ZEXBOoJNXYEF9k/NwjmaM0AQeG8pu+yCkZDnSKbdQkmzN67B8M6M zr0ZU/GH7tvTgK9IzBa920Xed5Yg1aC/tvnebchLf4X/ySqw8cl6suqVwi8fbgtXEd WgStWeGtjRQlTEZ2P6Mxq8adIEM6LeAdXVIsGr5CoNAXy6oZWeMQR7aqv0aTvwQXYa 6S82w3JCzDnkXR4DTapI1NhW0/usghZ2naaIvpISx1gd/WgG9e436GGpwGDxwbcpym lZ2jnAt0IvECA== From: Mark Brown Date: Tue, 27 Dec 2022 13:06:35 +0000 Subject: [PATCH 1/4] kselftest/arm64: Fix syscall-abi for systems without 128 bit SME MIME-Version: 1.0 Message-Id: <20221223-arm64-syscall-abi-sme-only-v1-1-4fabfbd62087@kernel.org> References: <20221223-arm64-syscall-abi-sme-only-v1-0-4fabfbd62087@kernel.org> In-Reply-To: <20221223-arm64-syscall-abi-sme-only-v1-0-4fabfbd62087@kernel.org> To: Catalin Marinas , Will Deacon , Shuah Khan Cc: Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Brown X-Mailer: b4 0.12-dev-7ab1d X-Developer-Signature: v=1; a=openpgp-sha256; l=1220; i=broonie@kernel.org; h=from:subject:message-id; bh=RNcNgyi+XWeNF+WSinst8npBEXg52AmbeM5w3G+O9YA=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBjqu3l6Oy4cmr1i0AZdD7/l1h/+/8+rwatiqVG6BTH CJpZJdKJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCY6rt5QAKCRAk1otyXVSH0C0GB/ 41Fa+ye3U2Z+ujAnWV+Wyw58vmNFHQRwErFPW8ILHwKAurwod1ESbL3QB84c6oyxBY0Xm5akg63pKv AHyoOJo0V7ylfEeo+KLhIUf+/j8g5TvTgL4Ao+wuUdR7FniW9n17Nup/g8NpAKE3zNNwK0gFZWBwZ2 K9w8Fh+LI8/LVusdHwE+3xf9EfObLOoFNTXDvrIR5XDFJkzX+shp7IFgdNLowymPJJHaeo4DQ+mAB5 UuFkn34rcrCOzQumrWH9SD6nD+PBk6SVn+K5J+RdJDkSWGj55n+FFmX+PBbUxyNLT4vHB3PnNqdJXG HitVrnB+Lng5mN3x5qHOU90Q67lNzG X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org SME does not mandate any specific VL so we may not have 128 bit SME but the algorithm used for enumerating VLs assumes that we will. Add the required check to ensure that the algorithm terminates. Fixes: 43e3f85523e4 ("kselftest/arm64: Add SME support to syscall ABI test") Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/abi/syscall-abi.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/syscall-abi.c b/tools/testing/selftests/arm64/abi/syscall-abi.c index dd7ebe536d05..ffe719b50c21 100644 --- a/tools/testing/selftests/arm64/abi/syscall-abi.c +++ b/tools/testing/selftests/arm64/abi/syscall-abi.c @@ -390,6 +390,10 @@ static void test_one_syscall(struct syscall_cfg *cfg) sme_vl &= PR_SME_VL_LEN_MASK; + /* Found lowest VL */ + if (sve_vq_from_vl(sme_vl) > sme_vq) + break; + if (sme_vq != sve_vq_from_vl(sme_vl)) sme_vq = sve_vq_from_vl(sme_vl); @@ -461,6 +465,10 @@ int sme_count_vls(void) vl &= PR_SME_VL_LEN_MASK; + /* Found lowest VL */ + if (sve_vq_from_vl(vl) > vq) + break; + if (vq != sve_vq_from_vl(vl)) vq = sve_vq_from_vl(vl);