From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A23321A45C for ; Wed, 30 Apr 2025 21:40:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746049257; cv=none; b=R/XZhGhsDmtTNfavrlEG4IpVAUu/vcwzaVUmDLfy64KONFI5yk8Tf2mvnUhPvR3irTK179/03V6nyO+GwEMzOKjc9XMIQDUAZyQoRtS2fsYWQBaiE3lk8avBEZ7WDEoKj0qqya+lTvetqFNu7WdDx4mdxd5/tshdw10H/2P9hAY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746049257; c=relaxed/simple; bh=FbnolmAa1ihzTPwaP2gNpvYM8Cq8h/hbym23Rvf/YdI=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=GmuhN4XY/CFRMDD1d1uQ3IHr0Bl/+NVegZxuJFZ48MWgxLuUiEnNU+Jb0Swv5zcdnsrYpC/ACHnU8pKA+MCAUB9xBQLXnrbBPJAhQ/NDgD37TYldDhElfcPOJBv4wXVKroDGHAy1esCbWoc9KlfFNLDcpC+15nEEAvS3WxjUTuM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--samitolvanen.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=f3ei+D/N; arc=none smtp.client-ip=209.85.216.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--samitolvanen.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="f3ei+D/N" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-2ff78dd28ecso347065a91.1 for ; Wed, 30 Apr 2025 14:40:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1746049255; x=1746654055; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=ltTv4znqsFQ85Lzp8jrl6i/DISWTecXsf7/GiAae7us=; b=f3ei+D/Nik7TI4zx8EFgb27snP7VJstw6HjDKfke3GuxbplEYqEUM08B0bpMlAbbY/ k9ZTI/VTUtThc9zWi/UNgl9hnzkCbkBSB7r3hGOsMH63DXfleS6TFhjLhoTVNMaNU2rd jWII2AopLfdn+btxmr2+7WnkyQWo1ihjNtGjBYJQHl/RYs+pjG7wXwSdnisQ55CKnKVa hiqhfAuSvZmC6eZapZJM3lrzIMKcG/BmueFs5mmw+8+LLywFQYH2ppUX3YlaSo3mH5lF NAbZJZkwTHC+6MIS0qqRfd4kztsVw9qZeax8GdSvIqxkxyUxuSxGnvisZaju9Pgy0oki 1mRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746049255; x=1746654055; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ltTv4znqsFQ85Lzp8jrl6i/DISWTecXsf7/GiAae7us=; b=AGOPlPiZX4dV8SuPRLqFn8SZKujY/zeUeNLEI41bHEiHtZpDXUoM5hCJmQDjOcp8Dz /MgWi6VTtcqnw7ennVndOSv0qc25Z/buUF5HmuSOPsvfGoQh+LnonnmmNQnTQyePRcbu HLJ4jkSSdAPiRZLfiGAyp9xl97t5yIq7iLvf3b9VX030NSElv2STMtt5NZtv4bPO+CqM zMpu+0kBQFNfqrk8EuFi3PziX5QKMEX0MBrXrNPrWbZi5ivCykCXbclMD246fhCtHKMw QbIngkajHkVqnPuhRM7csfrnhz3xpd9kZZf+7dVLksLv1IiJKc8P3rZjvTATx27YwzT7 AZfA== X-Forwarded-Encrypted: i=1; AJvYcCVQw3Sk5ZW5btxz6bMF4866GLhuAr49cQDy6zZyiiKsek6yg8SL8PscJN648/48CTQZvD86wG0P7Z/z52o=@vger.kernel.org X-Gm-Message-State: AOJu0YwBS/yq2JwmI2Fiabg3DJ4gAMbt0AuBV7U6PR+9Quk900sj/G39 f8VTLvPaS0q8Z3ePT/3fMWVPbl4nRUrQ196+MEub2o8aNxEHFyhHPOEjA/n07H4wQ2x04IFUXyR nb4+Lpri56CizbxT5qhqv8tnqOQ== X-Google-Smtp-Source: AGHT+IHOigGLKmP0bsX9ImdviZNTFg2SnFjPl4mnMIE6/Erbd6Dr1d6kRq9Sy7Ge7gO2BpFsO/mUA7OMoOWGCp+XeY4= X-Received: from pjbnw8.prod.google.com ([2002:a17:90b:2548:b0:2fa:a101:755]) (user=samitolvanen job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2dc2:b0:2ee:74a1:fba2 with SMTP id 98e67ed59e1d1-30a344217cemr6007965a91.20.1746049254932; Wed, 30 Apr 2025 14:40:54 -0700 (PDT) Date: Wed, 30 Apr 2025 21:40:50 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=1542; i=samitolvanen@google.com; h=from:subject; bh=FbnolmAa1ihzTPwaP2gNpvYM8Cq8h/hbym23Rvf/YdI=; b=owGbwMvMwCEWxa662nLh8irG02pJDBlCMx4GKL7vEF2bPrtkEQfv1EXfPAxi2h7J8B7JcDs1p U9kxV6ejlIWBjEOBlkxRZaWr6u37v7ulPrqc5EEzBxWJpAhDFycAjAROS1Ghvdmq58a7jbavC5V zVZ7ncbiVZIiGuWvfpe/MrK9fSX48lKGvyIxWcXNT1mrgu8nSCzisd6e17umJ/W0aX9Ykku498k f/AA= X-Mailer: git-send-email 2.49.0.906.g1f30a19c02-goog Message-ID: <20250430214049.2658716-6-samitolvanen@google.com> Subject: [PATCH 0/4] gendwarfksyms: Add more kABI rules From: Sami Tolvanen To: Masahiro Yamada Cc: Luis Chamberlain , Petr Pavlu , Daniel Gomez , linux-modules@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Hi, While looking deeper into the genksyms hacks that have been needed during Android's 5.10 and 5.15 GKI lifecycles so far, we found a few instances that are not covered by the existing gendwarfksyms kABI stability rules. The first case involved appending new members to a partially opaque data structure, and the second case completely changing opaque types due to a large backport that was necessary for both stability and security. These patches add rules that allow distribution maintainers to deal with structure size changes, and as a last resort, to completely override a type string used for version calculation. Sami --- Sami Tolvanen (4): gendwarfksyms: Clean up kABI rule look-ups gendwarfksyms: Add a kABI rule to override byte_size attributes gendwarfksyms: Add a kABI rule to override type strings Documentation/kbuild: Add new gendwarfksyms kABI rules Documentation/kbuild/gendwarfksyms.rst | 103 ++++++++++++++-- scripts/gendwarfksyms/dwarf.c | 14 ++- scripts/gendwarfksyms/examples/kabi.h | 21 +++- scripts/gendwarfksyms/examples/kabi_ex.c | 7 ++ scripts/gendwarfksyms/examples/kabi_ex.h | 101 +++++++++++++++- scripts/gendwarfksyms/gendwarfksyms.h | 2 + scripts/gendwarfksyms/kabi.c | 143 ++++++++++++++--------- scripts/gendwarfksyms/types.c | 141 +++++++++++++++++++--- 8 files changed, 452 insertions(+), 80 deletions(-) base-commit: b4432656b36e5cc1d50a1f2dc15357543add530e -- 2.49.0.906.g1f30a19c02-goog