From patchwork Tue Aug 12 22:21:42 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Mason X-Patchwork-Id: 68424 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45175CA0EE0 for ; Tue, 12 Aug 2025 22:21:57 +0000 (UTC) Received: from mail-qv1-f54.google.com (mail-qv1-f54.google.com [209.85.219.54]) by mx.groups.io with SMTP id smtpd.web11.87306.1755037309340549028 for ; Tue, 12 Aug 2025 15:21:49 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@kudzu-us.20230601.gappssmtp.com header.s=20230601 header.b=rj9cAHLC; spf=none, err=permanent DNS error (domain: kudzu.us, ip: 209.85.219.54, mailfrom: jdmason@kudzu.us) Received: by mail-qv1-f54.google.com with SMTP id 6a1803df08f44-6f8aa9e6ffdso58946996d6.3 for ; Tue, 12 Aug 2025 15:21:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kudzu-us.20230601.gappssmtp.com; s=20230601; t=1755037308; x=1755642108; darn=lists.openembedded.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=I29KAoTT2LetotsZVK2jS/99eThd+rxZzIwunOQiGqQ=; b=rj9cAHLCHb3wEygvuFc/ez51J/RfMFIqeV3aS1LvFeMX5BFw3EfeuSrcy4ljB85+XC HxmeV116tVTTQlWQMFhVLaPOegxZpyygGBjTfxDrN3N3aZ1y/OY+4cudn/MlUqKCK8rV NsX0m7rAX3Muu9cO9Zz0BpsOJTViQzB5URfCa6R38LIyIQt8+AIbmhVAcPDpUjouvVno XUMUmqXv0+xMBGLclmMG0hCWDIkjKqAr0/92blibvzVfNwhBkcCF37auiQ97H1XAuEBP kL/Cw/6Uy0RAILojTm59cAO21dPr/nRTlKTXL7gW13f7S7nziMNJwUZ+5SttKV6R7l8C HKxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755037308; x=1755642108; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=I29KAoTT2LetotsZVK2jS/99eThd+rxZzIwunOQiGqQ=; b=n1RIapzl2tRzOgU592cTZhIZCFbSRA8oSh3Trlr72nrQl01oLEZHCtV2W/PnT8CAMN 2+In8TexM/JZq6PoQ9EkIcY5pGawY/jBmFcLb1XMdtmSEECH75xPiFJolOX4DOWZmW3I lWWHF8pnMcs6kwuYeXW4ZUHr6QzcIQrMrx6It58ROTssnS5nC1Qflyp2oSS67RYCzlgF H3P2Njf7T0RRstZ4ZU5JXrxDeJsPojag7+khqT3uR/GS83qGW7w8qnTXTqQc3VCcvVX6 3lqFjTAY//XJMPzd6gsJsjlvq5El40qb1ZsRaCy1LHjSX8sJSHk+3tGjpfBoREBy+ZNj QmDw== X-Gm-Message-State: AOJu0YyjnbgjbkALzjDRaUzx1wdWpZAABtL+ftT5D+9ZpSHIwEX9leka XaYZO6hk9Untfq3odNTw/YaK/rhHYD2n3vSp6IQvmThSdOIUxApl3GI2WrLqDBIzjuGtHm6VUAW 1sG8= X-Gm-Gg: ASbGncuT8SN11/QDAw8GG6KFxMuXuWgyTX2xd4WvKqfBpClQSu3jbGJ4rLlU1HHIsHN hAT88HgPh/o8qHZtOvT2JG3NE2pnSHbDkHQlvAwI688CBi+LbLm7XhNvXKw1fe3YA5xzHyuxnQf 2tOQt0WmGxf6J2uDkFF7HlTvon6L8/biH/nqMLH1Dn9bJmetvZwM7TcaMIrWVrsSYOzoCsm2xyY 4izgYnznRvsmHkNqB8v6v05LBkR6GrziWJTq8D/FQ/4ptXo48SkER8lJHmeegYizSAFc2LkU/EW Pqbt6AaA/QSbnEKi3OA/TNReBhfuQ+jf+DRA9M1O2BwMlwflkRoCjyKbDn+C99vEBCh7tNO/Tao egeb4McsDcU/uWw== X-Google-Smtp-Source: AGHT+IFV8dK2/lKYRo/ZEikGW1TSP5fNED5KCJzwOACSr94uTWHmwd5hArKXEKhF94yakkdVHd0hVQ== X-Received: by 2002:a05:6214:2388:b0:709:64fd:8743 with SMTP id 6a1803df08f44-709e87a7fcbmr12562916d6.3.1755037308186; Tue, 12 Aug 2025 15:21:48 -0700 (PDT) Received: from localhost ([136.56.27.188]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-7077cdf11b9sm185031776d6.74.2025.08.12.15.21.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Aug 2025 15:21:47 -0700 (PDT) From: Jon Mason X-Google-Original-From: Jon Mason To: openembedded-core@lists.openembedded.org Cc: Ryan Eatmon , Khem Raj Subject: [PATCH 2/2] arm: add nocrypto TUNE_FEATURE to complement crypto Date: Tue, 12 Aug 2025 18:21:42 -0400 Message-Id: <20250812222142.1761197-2-jon.mason@arm.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250812222142.1761197-1-jon.mason@arm.com> References: <20250812222142.1761197-1-jon.mason@arm.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 12 Aug 2025 22:21:57 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/221782 Add a `nocrypto` TUNE_FEATURE option to `feature-arm-crypto.inc` to explicitly disable ARM crypto extensions via GCC flags. This provides an opposing state to the existing `crypto` feature, enabling more explicit control over crypto-related tuning. Some vendors ship cores without crypto support, and this change allows disabling it without requiring extensive audits of dependent code paths. This approach avoids the knock-on effects caused when `nocrypto` is applied implicitly in the absence of `crypto` in TUNE_FEATURES. TUNECONFLICTS was added to prevent both features from being enabled simultaneously. When both are added, the following error is seen during build: Feature 'nocrypto' conflicts with 'crypto'. Feature 'crypto' conflicts with 'nocrypto'. Signed-off-by: Jon Mason Cc: Ryan Eatmon Cc: Khem Raj --- meta/conf/machine/include/arm/feature-arm-crypto.inc | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/meta/conf/machine/include/arm/feature-arm-crypto.inc b/meta/conf/machine/include/arm/feature-arm-crypto.inc index aade6ce08d5e..c1f5b1225dfd 100644 --- a/meta/conf/machine/include/arm/feature-arm-crypto.inc +++ b/meta/conf/machine/include/arm/feature-arm-crypto.inc @@ -3,3 +3,8 @@ TUNEVALID[crypto] = "Enable cryptographic instructions for ARMv8" TUNE_CCARGS_MARCH_OPTS .= "${@bb.utils.contains('TUNE_FEATURES', 'crypto', '+crypto', '', d)}" +TUNECONFLICTS[crypto] = "nocrypto" + +TUNEVALID[nocrypto] = "Disable cryptographic instructions for ARMv8" +TUNE_CCARGS_MARCH_OPTS .= "${@bb.utils.contains('TUNE_FEATURES', 'nocrypto', '+nocrypto', '', d)}" +TUNECONFLICTS[nocrypto] = "crypto"