linux-kernel - [PATCH RFC v3 11/16] virtio

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Date:	Wed, 22 Oct 2014 21:44:51 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Cornelia Huck <cornelia.huck@...ibm.com>,
	Thomas Huth <thuth@...ux.vnet.ibm.com>,
	David Hildenbrand <dahi@...ux.vnet.ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	virtualization@...ts.linux-foundation.org
Subject: [PATCH RFC v3 11/16] virtio_blk: use virtio v1.0 endian

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

Note that we care only about the fields still in use for virtio v1.0.

Reviewed-by: Thomas Huth <thuth@...ux.vnet.ibm.com>
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/block/virtio_blk.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index c6a27d5..327e601 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -113,6 +113,10 @@ static int __virtblk_add_req(struct virtqueue *vq,
 	sg_init_one(&status, &vbr->status, sizeof(vbr->status));
 	sgs[num_out + num_in++] = &status;
 
+	/* we only care about fields valid for virtio-1 */
+	vbr->out_hdr.type = cpu_to_virtio32(vq->vdev, vbr->out_hdr.type);
+	vbr->out_hdr.sector = cpu_to_virtio64(vq->vdev, vbr->out_hdr.sector);
+
 	return virtqueue_add_sgs(vq, sgs, num_out, num_in, vbr, GFP_ATOMIC);
 }
 
-- 
MST

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