From nobody Thu Feb 12 13:28:14 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1770823563; cv=none; d=zohomail.com; s=zohoarc; b=P2eD0Lpiel0FAS70AKK8iI6ndpZ48IoDwjVZ5OMgi3s6IExAarMZn7UhFk1Xow08dsClc68RBIeA4U+JWCQ9ijKGMUejBi3wH2oaqNxb8b/PllY8z7K4f2dx5TzCGEukRz3zCyEPkVXlwcVf1At/lvauHXs0tVTRd1Gd521CBV0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1770823563; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=4nNBnkbdOoq/TO93m2/cqfU9S+qOIByL3MN/2Z5FSuM=; b=nUGTIvETxK6J17BOr4iolfGv9CjSpW+M12ucdb5SERNAEGDPmgLPWHoSObvYBNbIhMdvWPEdr+CpqnEN7YY7R44rx5NOphnLSr/A9ZbRSlMUX/2AbB9ipI9rHe1fW6V+NZnLfoPI4aaIQyHdTdBZjD3i6itrm36JqruEHppZTEU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770823563721903.637602686726; Wed, 11 Feb 2026 07:26:03 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vqC6F-0004cD-QJ; Wed, 11 Feb 2026 10:25:55 -0500 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 1vqC63-0004Xi-7w for qemu-devel@nongnu.org; Wed, 11 Feb 2026 10:25:45 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vqC61-0005dt-Oj for qemu-devel@nongnu.org; Wed, 11 Feb 2026 10:25:42 -0500 Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-74-FTCQmgAGPwSyASZ7_ncZEw-1; Wed, 11 Feb 2026 10:25:35 -0500 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 97A8618003F5; Wed, 11 Feb 2026 15:25:33 +0000 (UTC) Received: from toolbx.redhat.com (unknown [10.45.227.9]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 5E77430001A8; Wed, 11 Feb 2026 15:25:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1770823538; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4nNBnkbdOoq/TO93m2/cqfU9S+qOIByL3MN/2Z5FSuM=; b=FlQ0oCV4qwMOQy6QHLArzNqVS91NamHNmLZmP9XUzV0hVO8DZ/xx6eGqIclyaOgStsxFoY 7wmigjEsi2DY5cGSRdAe/THvkOcvzshhNLrmZ7IZONcX4B5hyqzkrdWHl+rxwGjR6ZsSBZ LP9thSKb+0TABYNnRALE3Val6dzX2aw= X-MC-Unique: FTCQmgAGPwSyASZ7_ncZEw-1 X-Mimecast-MFC-AGG-ID: FTCQmgAGPwSyASZ7_ncZEw_1770823533 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Manos Pitsidianakis , Stefan Weil , "Dr. David Alan Gilbert" , Pierrick Bouvier , devel@lists.libvirt.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Hanna Reitz , Kevin Wolf , qemu-block@nongnu.org, qemu-rust@nongnu.org, Paolo Bonzini , Markus Armbruster , Gerd Hoffmann , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Christian Schoenebeck , Richard Henderson Subject: [PATCH v6 03/27] include: define constant for early constructor priority Date: Wed, 11 Feb 2026 15:24:44 +0000 Message-ID: <20260211152508.732487-4-berrange@redhat.com> In-Reply-To: <20260211152508.732487-1-berrange@redhat.com> References: <20260211152508.732487-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1770823565738158500 Functions marked with __attribute__((__constructor__)) will be invoked in linker order. In theory this is well defined, but in practice, it is hard to determine what this order will be with the layers of indirection through meson, ninja and the static libraries QEMU builds. Notably, the order currently appears different between Linux and Windows (as tested with Wine on Linux). This can cause problems when certain QEMU constructors have a dependancy on other QEMU constructors. To address this define a QEMU_CONSTRUCTOR_EARLY constant which provides a priority value that will run before other default constructors. This is to be used for QEMU constructors that are themselves self-contained, but may be relied upon by other constructors. Reviewed-by: Richard Henderson Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Daniel P. Berrang=C3=A9 --- include/qemu/compiler.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h index 1c2b673c05..4c49f52eb0 100644 --- a/include/qemu/compiler.h +++ b/include/qemu/compiler.h @@ -194,6 +194,14 @@ # define QEMU_USED #endif =20 +/* + * A priority for __attribute__((constructor(...))) that + * will run earlier than the default constructors. Must + * only be used for functions that have no dependency + * on global initialization of other QEMU subsystems. + */ +#define QEMU_CONSTRUCTOR_EARLY 101 + /* * Disable -ftrivial-auto-var-init on a local variable. * --=20 2.53.0