From ed0b3ebbae4d3afd9f742613ed64444e4d04ae0a Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Mon, 2 Oct 2023 22:32:16 +0200 Subject: [PATCH] vhost-user: tighten "reply_supported" scope in "set_vring_addr" MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit In the vhost_user_set_vring_addr() function, we calculate "reply_supported" unconditionally, even though we'll only need it if "wait_for_reply" is also true. Restrict the scope of "reply_supported" to the minimum. This is purely refactoring -- no observable change. Cc: "Michael S. Tsirkin" (supporter:vhost) Cc: Eugenio Perez Martin Cc: German Maglione Cc: Liu Jiang Cc: Sergio Lopez Pascual Cc: Stefano Garzarella Signed-off-by: Laszlo Ersek Reviewed-by: Stefano Garzarella Tested-by: Albert Esteve Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Eugenio Pérez Message-Id: <20231002203221.17241-3-lersek@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/virtio/vhost-user.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 3e33a2e9e0..6c7b4cc75c 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1321,17 +1321,18 @@ static int vhost_user_set_vring_addr(struct vhost_dev *dev, .hdr.size = sizeof(msg.payload.addr), }; - bool reply_supported = virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_ACK); - /* * wait for a reply if logging is enabled to make sure * backend is actually logging changes */ bool wait_for_reply = addr->flags & (1 << VHOST_VRING_F_LOG); - if (reply_supported && wait_for_reply) { - msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK; + if (wait_for_reply) { + bool reply_supported = virtio_has_feature(dev->protocol_features, + VHOST_USER_PROTOCOL_F_REPLY_ACK); + if (reply_supported) { + msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK; + } } ret = vhost_user_write(dev, &msg, NULL, 0); -- 2.30.2