Advertise bi-endianness support in the feature flags, and provide
byte-swapping of the config structure depending on the guest selection.
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
tools/kvm/virtio/9p.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/kvm/virtio/9p.c b/tools/kvm/virtio/9p.c
index 127b13a..b823306 100644
--- a/tools/kvm/virtio/9p.c
+++ b/tools/kvm/virtio/9p.c
@@ -1245,14 +1245,16 @@ static u8 *get_config(struct kvm *kvm, void *dev)
static u32 get_host_features(struct kvm *kvm, void *dev)
{
- return 1 << VIRTIO_9P_MOUNT_TAG;
+ return (1 << VIRTIO_9P_MOUNT_TAG) | VIRTIO_RING_ENDIAN;
}
static void set_guest_features(struct kvm *kvm, void *dev, u32 features)
{
struct p9_dev *p9dev = dev;
+ struct virtio_9p_config *conf = p9dev->config;
p9dev->features = features;
+ conf->tag_len = htole16(conf->tag_len);
}
static int init_vq(struct kvm *kvm, void *dev, u32 vq, u32 page_size, u32 align,
@@ -1271,6 +1273,7 @@ static int init_vq(struct kvm *kvm, void *dev, u32 vq, u32 page_size, u32 align,
job = &p9dev->jobs[vq];
vring_init(&queue->vring, VIRTQUEUE_NUM, p, align);
+ virt_queue__init(queue, p9dev->features);
*job = (struct p9_dev_job) {
.vq = queue,
--
1.8.2.3
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