From nobody Tue Feb 10 15:01:15 2026 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; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1517496404286340.4520309894061; Thu, 1 Feb 2018 06:46:44 -0800 (PST) Received: from localhost ([::1]:40825 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ehG8M-0003Os-6H for importer@patchew.org; Thu, 01 Feb 2018 09:46:38 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51950) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ehG6N-00026X-8m for qemu-devel@nongnu.org; Thu, 01 Feb 2018 09:44:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ehG6L-0003Yq-I8 for qemu-devel@nongnu.org; Thu, 01 Feb 2018 09:44:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45394) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ehG6L-0003Yb-Bd for qemu-devel@nongnu.org; Thu, 01 Feb 2018 09:44:33 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 89E9E780FB; Thu, 1 Feb 2018 14:44:32 +0000 (UTC) Received: from donizetti.redhat.com (ovpn-116-82.ams2.redhat.com [10.36.116.82]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9780C620B3; Thu, 1 Feb 2018 14:44:31 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Thu, 1 Feb 2018 09:44:25 -0500 Message-Id: <20180201144430.14441-2-pbonzini@redhat.com> In-Reply-To: <20180201144430.14441-1-pbonzini@redhat.com> References: <20180201144430.14441-1-pbonzini@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Thu, 01 Feb 2018 14:44:32 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/6] cpus: hax: register/unregister thread with RCU, exit loop on unplug 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: linzc@zju.edu.cn 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" Signed-off-by: Paolo Bonzini --- cpus.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/cpus.c b/cpus.c index 1495ed5c36..231550a0d8 100644 --- a/cpus.c +++ b/cpus.c @@ -1474,6 +1474,7 @@ static void *qemu_hax_cpu_thread_fn(void *arg) CPUState *cpu =3D arg; int r; =20 + rcu_register_thread(); qemu_mutex_lock_iothread(); qemu_thread_get_self(cpu->thread); =20 @@ -1485,7 +1486,7 @@ static void *qemu_hax_cpu_thread_fn(void *arg) hax_init_vcpu(cpu); qemu_cond_signal(&qemu_cpu_cond); =20 - while (1) { + do { if (cpu_can_run(cpu)) { r =3D hax_smp_cpu_exec(cpu); if (r =3D=3D EXCP_DEBUG) { @@ -1494,7 +1495,8 @@ static void *qemu_hax_cpu_thread_fn(void *arg) } =20 qemu_wait_io_event(cpu); - } + } while (!cpu->unplug || cpu_can_run(cpu)); + rcu_unregister_thread(); return NULL; } =20 --=20 2.14.3