From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Paolo Bonzini 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> Subject: [Qemu-devel] [PATCH 1/6] cpus: hax: register/unregister thread with RCU, exit loop on unplug List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: linzc@zju.edu.cn 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 = arg; int r; + rcu_register_thread(); qemu_mutex_lock_iothread(); qemu_thread_get_self(cpu->thread); @@ -1485,7 +1486,7 @@ static void *qemu_hax_cpu_thread_fn(void *arg) hax_init_vcpu(cpu); qemu_cond_signal(&qemu_cpu_cond); - while (1) { + do { if (cpu_can_run(cpu)) { r = hax_smp_cpu_exec(cpu); if (r == EXCP_DEBUG) { @@ -1494,7 +1495,8 @@ static void *qemu_hax_cpu_thread_fn(void *arg) } qemu_wait_io_event(cpu); - } + } while (!cpu->unplug || cpu_can_run(cpu)); + rcu_unregister_thread(); return NULL; } -- 2.14.3