From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751947AbeFEHlc (ORCPT ); Tue, 5 Jun 2018 03:41:32 -0400 Received: from mga11.intel.com ([192.55.52.93]:14303 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751572AbeFEHlL (ORCPT ); Tue, 5 Jun 2018 03:41:11 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,478,1520924400"; d="scan'208";a="56617100" From: Tiwei Bie To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: wexu@redhat.com, jfreimann@redhat.com, tiwei.bie@intel.com Subject: [RFC v6 5/5] virtio_ring: enable packed ring Date: Tue, 5 Jun 2018 15:40:46 +0800 Message-Id: <20180605074046.20709-6-tiwei.bie@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180605074046.20709-1-tiwei.bie@intel.com> References: <20180605074046.20709-1-tiwei.bie@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Tiwei Bie --- drivers/s390/virtio/virtio_ccw.c | 8 ++++++++ drivers/virtio/virtio_ring.c | 2 ++ 2 files changed, 10 insertions(+) diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index 8f5c1d7f751a..ff5b85736d8d 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -765,6 +765,11 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev) return rc; } +static void ccw_transport_features(struct virtio_device *vdev) +{ + __virtio_clear_bit(vdev, VIRTIO_F_RING_PACKED); +} + static int virtio_ccw_finalize_features(struct virtio_device *vdev) { struct virtio_ccw_device *vcdev = to_vc_device(vdev); @@ -791,6 +796,9 @@ static int virtio_ccw_finalize_features(struct virtio_device *vdev) /* Give virtio_ring a chance to accept features. */ vring_transport_features(vdev); + /* Give virtio_ccw a chance to accept features. */ + ccw_transport_features(vdev); + features->index = 0; features->features = cpu_to_le32((u32)vdev->features); /* Write the first half of the feature bits to the host. */ diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index aefd7ac40928..fe849fd8733b 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -1965,6 +1965,8 @@ void vring_transport_features(struct virtio_device *vdev) break; case VIRTIO_F_IOMMU_PLATFORM: break; + case VIRTIO_F_RING_PACKED: + break; default: /* We don't understand this bit. */ __virtio_clear_bit(vdev, i); -- 2.17.0