This patch series fixes the issue with unplug/replug of a port in virtio console driver which fails with an error "Error allocating inbufs\n". Patch 1 updates the next avail index for packed ring code. Patch 2 makes use of 'virtqueue_detach_unused_buf' function to detach the unused buffers during port hotunplug time. Tested the packed ring code with the qemu virtio 1.1 device code posted here [1]. Also, sent a patch to document the behavior in virtio spec as suggested by Michael. Changes from v3 - Swap patch 1 with patch 2 - [Michael] - Added acked-by tag by Jason in patch 1 - Add reference to spec change Changes from v2 - Better change log in patch2 - [Greg] Changes from v1[2] - Make virtio packed ring code compatible with split ring - [Michael] [1] https://marc.info/?l=qemu-devel&m=156471883703948&w=2 [2] https://lkml.org/lkml/2019/3/4/517 [3] https://lists.oasis-open.org/archives/virtio-dev/201908/msg00055.html Pankaj Gupta (2): virtio: decrement avail idx with buffer detach for packed ring virtio_console: free unused buffers with port delete char/virtio_console.c | 14 +++++++++++--- virtio/virtio_ring.c | 6 ++++++ 2 files changed, 17 insertions(+), 3 deletions(-) -- 2.21.0 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
