From nobody Wed Nov 5 10:09:32 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1534670180186886.6868360242814; Sun, 19 Aug 2018 02:16:20 -0700 (PDT) Received: from localhost ([::1]:42134 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1frJoe-0003wt-Jo for importer@patchew.org; Sun, 19 Aug 2018 05:16:08 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57169) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1frJmS-0002N6-85 for qemu-devel@nongnu.org; Sun, 19 Aug 2018 05:13:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1frJmP-0000da-NB for qemu-devel@nongnu.org; Sun, 19 Aug 2018 05:13:52 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:51711) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1frJmP-0000cK-8B; Sun, 19 Aug 2018 05:13:49 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 2E5A021AFB; Sun, 19 Aug 2018 05:13:48 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Sun, 19 Aug 2018 05:13:48 -0400 Received: from localhost (flamenco.cs.columbia.edu [128.59.20.216]) by mail.messagingengine.com (Postfix) with ESMTPA id 094BF10286; Sun, 19 Aug 2018 05:13:46 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=braap.org; h=cc :date:from:in-reply-to:message-id:references:subject:to :x-me-sender:x-me-sender:x-sasl-enc; s=mesmtp; bh=mnEnd6+OngbtoF QKaX5wMyPTIOlP1IBVd1afafuiqHY=; b=orr8CiLo1C6PV6WAJ8WPONzhmSlfb8 yWRdm31bUP4OQJkYXQa+USEfUrvfpYyexk+dDdXTfeoFftORgsUVZNlW7XmhPMIY v1WxboUzLXQLJ8ad7kln8gr6OrizijPQpoz0a9Hg30vLx3Osc9O5+VKarFvLRmii pDbWe87W4G8UQ= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:date:from:in-reply-to:message-id :references:subject:to:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=mnEnd6+OngbtoFQKaX5wMyPTIOlP1IBVd1afafuiqHY=; b=ITWhPXBg AZ+ZnQGDOdx26VGvz5ErrHuT4CA4PavLIjiL92zqM2W3zN7su+WzgXAhfGudo9u1 dECUEV6pUYQVhuteTw2WZ+XV8Q60vDaOqKyh4WF21Ncu8Gymda/1X1t5nQAWE97w jHKBNO01BPDLCcwQwEQKnZn+BHlLOcpPxtjiGvSz/IY8DVtptCEYq3nV7OP0abeq 0Z0+WmJ61lSlaKOc+JyYa/ykh2TtZ24gW3Zngncmf5pFLoOf2TZwpuN/gXIqaoXB gx2qITHdwzqKdqNPKKoEdkDCEUmuIZPuaU0hnpWC1lvfZkGiIICAyBsf4vIXu07r x6f1mVnBGRHcuQ== X-ME-Proxy: X-ME-Sender: From: "Emilio G. Cota" To: qemu-devel@nongnu.org Date: Sun, 19 Aug 2018 05:13:25 -0400 Message-Id: <20180819091335.22863-2-cota@braap.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180819091335.22863-1-cota@braap.org> References: <20180819091335.22863-1-cota@braap.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.111.4.25 Subject: [Qemu-devel] [PATCH v2 01/11] rcu_queue: use atomic_set in QLIST_REMOVE_RCU X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Crosthwaite , Riku Voipio , Alexander Graf , Laurent Vivier , qemu-ppc@nongnu.org, Paolo Bonzini , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" To avoid undefined behaviour. Signed-off-by: Emilio G. Cota --- include/qemu/rcu_queue.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/qemu/rcu_queue.h b/include/qemu/rcu_queue.h index 01be77407b..dd7b3be043 100644 --- a/include/qemu/rcu_queue.h +++ b/include/qemu/rcu_queue.h @@ -112,7 +112,7 @@ extern "C" { (elm)->field.le_next->field.le_prev =3D \ (elm)->field.le_prev; \ } \ - *(elm)->field.le_prev =3D (elm)->field.le_next; \ + atomic_set((elm)->field.le_prev, (elm)->field.le_next); \ } while (/*CONSTCOND*/0) =20 /* List traversal must occur within an RCU critical section. */ --=20 2.17.1