From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ACD54CA1005 for ; Mon, 1 Sep 2025 13:27:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ut4YP-00024i-C9; Mon, 01 Sep 2025 09:26:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ut4YN-000248-JG for qemu-devel@nongnu.org; Mon, 01 Sep 2025 09:26:35 -0400 Received: from mail-wr1-x433.google.com ([2a00:1450:4864:20::433]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ut4YL-0001Lr-KR for qemu-devel@nongnu.org; Mon, 01 Sep 2025 09:26:35 -0400 Received: by mail-wr1-x433.google.com with SMTP id ffacd0b85a97d-3d4dcf3863dso889936f8f.1 for ; Mon, 01 Sep 2025 06:26:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1756733189; x=1757337989; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=vMiNyuN8vCGx4gQ6SgirNIsSrqkqFDJsdJQQNQ3ScD8=; b=a1dXWPbvdOoA6s8N3b8aeUynfoy1KQFrQskmgfH+C0I7vh87EMcB22qT8JoKZlMtDQ hAIfbPCn1R9u30/jIz0pqp3xTWUSlWkJY6zHA9rE5DCO3udzTBgVXG3xAI6XefG434gl nr1QvpIBgsb3V2RXAi7n6qBL/eVK9EwK86+6oepobccpiklJYtFIjo3TKy1lTWU9zUVB Xqk6UAH/nyatjRQU4txuXH/PwiLRyNnLjFWIrdAsBUOdc6BGkXPNP6n7p0D/YvFxIVEH zGpSAutQOxnezqffi7YrLcY8jFQuPW2YIf3Ayd1/XjuH0yAPC0DHyH6kJ1aURIr37N9i 18uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756733189; x=1757337989; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=vMiNyuN8vCGx4gQ6SgirNIsSrqkqFDJsdJQQNQ3ScD8=; b=KIb/l52xgtX712aRp2Q9Kwxd4HKdppHEmq47QLLtFZ/ug5mANu+QQxAAsqgorQvtr1 bMUvhBNXQQq7/eFmBBdAqaXSe4JK+DBXIO0euJBsacGZTDn2GlgJ0UyOJ7AUxhtrqulC W+MoJ+4DGIUB8zGzs90+9cEUCPZOV1J6c7EbBkzVNbNuHBvARRo99FMOCdm35NeeFVZL AidPEX+BY9z1aJcfrYFamQw5nZocIE4B06MtbY6KdW6y4+qp9K24i6Bl00b1if43jqs3 5Nl5sOAYbntSn0Bq37m+hyLUSYrRrp1ni3W/fUy5L16wDZxPxeLF/xFvjQI6s45bdmI0 YKLg== X-Gm-Message-State: AOJu0YyCqre8EbMPBAqQBWFLhJ6RLhN5a3AsBZ8Q/XeQvnT4ap1hFwtl Ah3t58kVY2kMX4j4kkwi012sjP7q2je/awus6HK2z9ZnnLoRCB4SJKZmM9kEFAKVsrjuyUj/tHG GmZ2z X-Gm-Gg: ASbGncvSi+Q8Xoncb0yAYGI96U8162tYxA5S/MNbG4wN+GhZfDSDw0z8TGAXBkbPUB2 4kEUMrArMPPzoUkZwzbKE0gQfGVuxnbmYLiTaR0q0gaZ9x7+jz2OM0bHiHtFaGFmhdEuvl36kTC vJujV5yJlVOhIFB5hrFbihhik4pM1ALSJOudY1ZvtueQd9Lnq5pCyb05y9mgG4i3nyNNiq7oSDj uvArKc7T4/eKSGXzpqA4/KX03MBeOX8gbJwvgpCpnQVaovtuSTybYBHZSJkqhSWGPRgwUAS6pCu Un3p6HL8whWgkEDlqr6XFs+UyNEQfAUDa8D1LLG3G2yEIEtcyrMQ8hzXCoUF+6j+crpdpFr7g6/ KjILoh4/stNvK4bm4qoGdOa7QB4g7LwXdknqkQAq07IqVPSrWlBRyIPf5SjD+rFmgAB+CQRwJ X-Google-Smtp-Source: AGHT+IGvMZjAB7w3flVb9fpv8Ycj4IjlLC96zH/J1Wz7eo4dvSyKyjK/lO7Gxvgzr6WwfpI7VugvTQ== X-Received: by 2002:a05:6000:218a:b0:3d2:aadc:296 with SMTP id ffacd0b85a97d-3d2aadc060bmr3196475f8f.16.1756733188895; Mon, 01 Sep 2025 06:26:28 -0700 (PDT) Received: from localhost.localdomain (88-187-86-199.subs.proxad.net. [88.187.86.199]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3d0a1f807f9sm14484129f8f.38.2025.09.01.06.26.27 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 01 Sep 2025 06:26:28 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Paolo Bonzini , qemu-ppc@nongnu.org, Peter Maydell , Harsh Prateek Bora , Stefan Hajnoczi , Nicholas Piggin , Chinmay Rath , kvm@vger.kernel.org, Glenn Miles , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v2 0/3] system: Forbid alloca() Date: Mon, 1 Sep 2025 15:26:23 +0200 Message-ID: <20250901132626.28639-1-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=philmd@linaro.org; helo=mail-wr1-x433.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Eradicate alloca() uses on system code, then enable -Walloca to prevent new ones to creep back in. Since v1: - Convert KVM/PPC (Peter) - Update doc (Alex) Philippe Mathieu-Daudé (3): target/ppc/kvm: Avoid using alloca() buildsys: Prohibit alloca() use on system code docs/devel/style: Mention alloca() family API is forbidden docs/devel/style.rst | 4 ++-- meson.build | 4 ++++ target/ppc/kvm.c | 3 +-- 3 files changed, 7 insertions(+), 4 deletions(-) -- 2.51.0