Hello, This email is to report a behavior of the Linux virtio-sound driver that looks like it is not conforming to the VirtIO specification. The kernel driver is moving buffers from the used ring to the available ring without knowing if the content has been updated from the user. If the device picks up buffers from the available ring just after it is notified, it happens that the content is old. This problem can be fixed by waiting a period of time after the device dequeues a buffer from the available ring. The driver should not be allowed to change the content of a buffer in the available ring. When buffers are enqueued in the available ring, the device can consume them immediately.
1. Is the actual driver implementation following the spec? 2. Shall the spec be extended to support such a use-case? Thanks, Matias _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
