diff options
Diffstat (limited to 'sys/dev/beri')
| -rw-r--r-- | sys/dev/beri/virtio/virtio.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/sys/dev/beri/virtio/virtio.c b/sys/dev/beri/virtio/virtio.c index c249d1c9d37b..7302bc39d799 100644 --- a/sys/dev/beri/virtio/virtio.c +++ b/sys/dev/beri/virtio/virtio.c @@ -107,12 +107,17 @@ paddr_unmap(void *phys, uint32_t size) static inline void _vq_record(uint32_t offs, int i, volatile struct vring_desc *vd, struct iovec *iov, int n_iov, uint16_t *flags) { + uint32_t len; + uint64_t addr; + if (i >= n_iov) return; - iov[i].iov_base = paddr_map(offs, be64toh(vd->addr), - be32toh(vd->len)); - iov[i].iov_len = be32toh(vd->len); + len = atomic_load_32(&vd->len); + addr = atomic_load_64(&vd->addr); + iov[i].iov_base = paddr_map(offs, be64toh(addr), + be32toh(len)); + iov[i].iov_len = be32toh(len); if (flags != NULL) flags[i] = be16toh(vd->flags); } |