From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48157) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eeOl4-0007z5-Vn for qemu-devel@nongnu.org; Wed, 24 Jan 2018 12:22:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eeOl3-0006aj-WB for qemu-devel@nongnu.org; Wed, 24 Jan 2018 12:22:46 -0500 Received: from mx1.redhat.com ([209.132.183.28]:35388) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eeOl3-0006Zi-Pz for qemu-devel@nongnu.org; Wed, 24 Jan 2018 12:22:45 -0500 Date: Wed, 24 Jan 2018 19:22:43 +0200 From: "Michael S. Tsirkin" Message-ID: <1516814467-25906-3-git-send-email-mst@redhat.com> References: <1516814467-25906-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1516814467-25906-1-git-send-email-mst@redhat.com> Subject: [Qemu-devel] [PULL v2 2/3] Revert "virtio: postpone the execution of event_notifier_cleanup function" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Maydell , Gal Hammer , Sitong Liu , Xiaoling Gao , Greg Kurz , Paolo Bonzini , Jose Ricardo Ziviani , Daniel Henrique Barboza , kvm@vger.kernel.org This reverts commit 4fe6d78b2e241f41208dfb07605aace4becfc747 as it is reported to break cleanup and migration. Cc: Gal Hammer Cc: Sitong Liu Cc: Xiaoling Gao Suggested-by: Greg Kurz Suggested-by: Paolo Bonzini Reported-by: Jose Ricardo Ziviani Reported-by: Daniel Henrique Barboza --- accel/kvm/kvm-all.c | 4 ---- hw/virtio/virtio-bus.c | 19 ++++++++----------- 2 files changed, 8 insertions(+), 15 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 071f4f5..f290f48 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -812,10 +812,6 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener, if (r < 0) { abort(); } - - if (e->cleanup) { - e->cleanup(e); - } } static void kvm_io_ioeventfd_add(MemoryListener *listener, diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index 8106346..3042232 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -256,15 +256,6 @@ bool virtio_bus_ioeventfd_enabled(VirtioBusState *bus) return k->ioeventfd_assign && k->ioeventfd_enabled(proxy); } -static void virtio_bus_cleanup_event_notifier(EventNotifier *notifier) -{ - /* Test and clear notifier after disabling event, - * in case poll callback didn't have time to run. - */ - virtio_queue_host_notifier_read(notifier); - event_notifier_cleanup(notifier); -} - /* * This function switches ioeventfd on/off in the device. * The caller must set or clear the handlers for the EventNotifier. @@ -292,13 +283,19 @@ int virtio_bus_set_host_notifier(VirtioBusState *bus, int n, bool assign) r = k->ioeventfd_assign(proxy, notifier, n, true); if (r < 0) { error_report("%s: unable to assign ioeventfd: %d", __func__, r); - virtio_bus_cleanup_event_notifier(notifier); + goto cleanup_event_notifier; } + return 0; } else { - notifier->cleanup = virtio_bus_cleanup_event_notifier; k->ioeventfd_assign(proxy, notifier, n, false); } +cleanup_event_notifier: + /* Test and clear notifier after disabling event, + * in case poll callback didn't have time to run. + */ + virtio_queue_host_notifier_read(notifier); + event_notifier_cleanup(notifier); return r; } -- MST