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s390: KVM guest: fix compile error

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Fix kvm compile error:

Commit c45a6816c1
(virtio: explicit advertisement of driver features)
and commit e976a2b997
(s390: KVM guest: virtio device support, and kvm hypercalls)
don't like each other:

  CC      drivers/s390/kvm/kvm_virtio.o
drivers/s390/kvm/kvm_virtio.c:224: error: unknown field 'feature' specified in initializer
drivers/s390/kvm/kvm_virtio.c:224: warning: initialization from incompatible pointer type
make[3]: *** [drivers/s390/kvm/kvm_virtio.o] Error 1

Cc: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Heiko Carstens 2008-05-06 17:38:30 +03:00 committed by Avi Kivity
parent 107d6d2efa
commit 5ca9fd54e3
1 changed files with 23 additions and 17 deletions
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40
drivers/s390/kvm/kvm_virtio.c
View file

@ -78,27 +78,32 @@ static unsigned desc_size(const struct kvm_device_desc *desc)
+ desc->config_len;
}
/*
* This tests (and acknowleges) a feature bit.
*/
static bool kvm_feature(struct virtio_device *vdev, unsigned fbit)
/* This gets the device's feature bits. */
static u32 kvm_get_features(struct virtio_device *vdev)
{
unsigned int i;
u32 features = 0;
struct kvm_device_desc *desc = to_kvmdev(vdev)->desc;
u8 *features;
u8 *in_features = kvm_vq_features(desc);
if (fbit / 8 > desc->feature_len)
return false;
for (i = 0; i < min(desc->feature_len * 8, 32); i++)
if (in_features[i / 8] & (1 << (i % 8)))
features |= (1 << i);
return features;
}
features = kvm_vq_features(desc);
if (!(features[fbit / 8] & (1 << (fbit % 8))))
return false;
static void kvm_set_features(struct virtio_device *vdev, u32 features)
{
unsigned int i;
struct kvm_device_desc *desc = to_kvmdev(vdev)->desc;
/* Second half of bitmap is features we accept. */
u8 *out_features = kvm_vq_features(desc) + desc->feature_len;
/*
* We set the matching bit in the other half of the bitmap to tell the
* Host we want to use this feature.
*/
features[desc->feature_len + fbit / 8] |= (1 << (fbit % 8));
return true;
memset(out_features, 0, desc->feature_len);
for (i = 0; i < min(desc->feature_len * 8, 32); i++) {
if (features & (1 << i))
out_features[i / 8] |= (1 << (i % 8));
}
}
/*
@ -221,7 +226,8 @@ static void kvm_del_vq(struct virtqueue *vq)
* The config ops structure as defined by virtio config
*/
static struct virtio_config_ops kvm_vq_configspace_ops = {
.feature = kvm_feature,
.get_features = kvm_get_features,
.set_features = kvm_set_features,
.get = kvm_get,
.set = kvm_set,
.get_status = kvm_get_status,