On Wed, Sep 13, 2023 at 05:04:24PM +0200, Matias Ezequiel Vara Larsen wrote: > 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.
Then, what happens, exactly? Do things still work? > 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
