linux-kernel - [PATCH v4 17/42] KVM: s390: enable virtio-ccw revision 1

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Date:	Tue, 25 Nov 2014 18:42:37 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>, cornelia.huck@...ibm.com,
	rusty@....ibm.com, nab@...ux-iscsi.org, pbonzini@...hat.com,
	David Hildenbrand <dahi@...ux.vnet.ibm.com>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	linux390@...ibm.com, Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux-s390@...r.kernel.org
Subject: [PATCH v4 17/42] KVM: s390: enable virtio-ccw revision 1

From: Cornelia Huck <cornelia.huck@...ibm.com>

Now that virtio-ccw has everything needed to support virtio 1.0 in
place, try to enable it if the host supports it.

MST: enable virtio 1.0 feature bit

Reviewed-by: David Hildenbrand <dahi@...ux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 drivers/s390/kvm/virtio_ccw.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
index 50306b2..8ec68dd 100644
--- a/drivers/s390/kvm/virtio_ccw.c
+++ b/drivers/s390/kvm/virtio_ccw.c
@@ -103,7 +103,7 @@ struct virtio_rev_info {
 };
 
 /* the highest virtio-ccw revision we support */
-#define VIRTIO_CCW_REV_MAX 0
+#define VIRTIO_CCW_REV_MAX 1
 
 struct virtio_ccw_vq_info {
 	struct virtqueue *vq;
@@ -746,8 +746,7 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev)
 out_free:
 	kfree(features);
 	kfree(ccw);
-	/* TODO: enable virtio 1.0 */
-	return rc & ~BIT_ULL(VIRTIO_F_VERSION_1);;
+	return rc;
 }
 
 static void virtio_ccw_finalize_features(struct virtio_device *vdev)
-- 
MST

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