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authorRusty Russell <rusty@rustcorp.com.au>2008-07-25 21:06:13 +0400
committerRusty Russell <rusty@rustcorp.com.au>2008-07-25 06:06:14 +0400
commite34f87256794b87e7f4a8f1812538be7b7b5214c (patch)
treeb91ffb6df4ac13ace269bef60ae16a1048b1fa73 /drivers/s390
parentc624896e488ba2bff5ae497782cfb265c8b00646 (diff)
downloadlinux-e34f87256794b87e7f4a8f1812538be7b7b5214c.tar.xz
virtio: Add transport feature handling stub for virtio_ring.
To prepare for virtio_ring transport feature bits, hook in a call in all the users to manipulate them. This currently just clears all the bits, since it doesn't understand any features. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/kvm/kvm_virtio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 5953510e7d5f..79954bd6bfa5 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -95,6 +95,9 @@ static void kvm_finalize_features(struct virtio_device *vdev)
/* Second half of bitmap is features we accept. */
u8 *out_features = kvm_vq_features(desc) + desc->feature_len;
+ /* Give virtio_ring a chance to accept features. */
+ vring_transport_features(vdev);
+
memset(out_features, 0, desc->feature_len);
bits = min_t(unsigned, desc->feature_len, sizeof(vdev->features)) * 8;
for (i = 0; i < bits; i++) {