From nobody Mon Feb 2 09:22:49 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=1767891880; cv=none; d=zohomail.com; s=zohoarc; b=XE0myhoJ5m1gQUrNPmZ5UNHfF5ZpHXA8/iuDje0vqZuLG0kKWhWVQHzyrNjizIPVEB/nR97DpcTldda7pUI5gPHHArQEuTIpNpXClgNI8a5cP5f5RnBzDkVD/sJ7X9cqiMsMgOT731oRHZK1SbxcWlc9vzNB8EhSOoGBy+I6I5I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1767891880; 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=dVkf2McfXI8rQXFsrHNedkvrPIb0kVagd/uGEnAY1is=; b=fFDF6BXi0kV060EsOtSsdcWKLfB6G+Uwz9XcwVgAhUKBpXRDsfXVoe9nZQDMtd7h4mpbxvOR0w3MuDN0/jeAVa4YpPNvkYG+ABE7OCLc11E7KfK29lJOlsOjMxEcSZuoPI3w9CxU8Bcvt4T8/1BBMWZwEwMKJfF5JPFg3jQSotQ= 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 1767891880151408.259694176537; Thu, 8 Jan 2026 09:04:40 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vdtQf-0003oD-VB; Thu, 08 Jan 2026 12:04:09 -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 1vdtQa-0003jb-45 for qemu-devel@nongnu.org; Thu, 08 Jan 2026 12:04:04 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vdtQX-0006qg-TH for qemu-devel@nongnu.org; Thu, 08 Jan 2026 12:04:03 -0500 Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-517-iPqHC3uUMvS1YdJii-52Ag-1; Thu, 08 Jan 2026 12:03:56 -0500 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 644EE1956094; Thu, 8 Jan 2026 17:03:54 +0000 (UTC) Received: from toolbx.redhat.com (unknown [10.42.28.44]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 4B19F19560A2; Thu, 8 Jan 2026 17:03:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1767891841; 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=dVkf2McfXI8rQXFsrHNedkvrPIb0kVagd/uGEnAY1is=; b=ZTp7AonNf+rrNzo3ybP3JPmnkUzanYoTH66Ameht/G7XgFuzk5h+N9Rb1mh5WYgYwZgqkL SqtOxtLbokRLVFgP5jsp7Jl+CxxUB+3oV9CI1hDRHdOZyQSVYNBJeTaQNhYuP/SHDdMoVo F5UACEqoWptXfdWO5S5J5LnEXKxX/rU= X-MC-Unique: iPqHC3uUMvS1YdJii-52Ag-1 X-Mimecast-MFC-AGG-ID: iPqHC3uUMvS1YdJii-52Ag_1767891835 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Manos Pitsidianakis , Hanna Reitz , Gerd Hoffmann , Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Christian Schoenebeck , "Dr. David Alan Gilbert" , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , devel@lists.libvirt.org, qemu-block@nongnu.org, qemu-rust@nongnu.org, Markus Armbruster , Stefan Weil , Kevin Wolf , Richard Henderson Subject: [PATCH v5 02/24] include: define constant for early constructor priority Date: Thu, 8 Jan 2026 17:03:16 +0000 Message-ID: <20260108170338.2693853-3-berrange@redhat.com> In-Reply-To: <20260108170338.2693853-1-berrange@redhat.com> References: <20260108170338.2693853-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 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 (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=170.10.129.124; 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=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1767891882189158500 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 2.52.0