Re: [GIT PULL] virtio: features

[Ning, Hongyu]

On 2023/9/4 6:13, Michael S. Tsirkin wrote:
> The following changes since commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c:
>
>    Linux 6.5 (2023-08-27 14:49:51 -0700)
>
> are available in the Git repository at:
>
>    https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus
>
> for you to fetch changes up to 1acfe2c1225899eab5ab724c91b7e1eb2881b9ab:
>
>    virtio_ring: fix avail_wrap_counter in virtqueue_add_packed (2023-09-03 18:10:24 -0400)
>
> ----------------------------------------------------------------
> virtio: features
>
> a small pull request this time around, mostly because the
> vduse network got postponed to next relase so we can be sure
> we got the security store right.
>
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
>
> ----------------------------------------------------------------
> Eugenio Pérez (4):
>        vdpa: add VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK flag
>        vdpa: accept VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK backend feature
>        vdpa: add get_backend_features vdpa operation
>        vdpa_sim: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
>
> Jason Wang (1):
>        virtio_vdpa: build affinity masks conditionally
>
> Xuan Zhuo (12):
>        virtio_ring: check use_dma_api before unmap desc for indirect
>        virtio_ring: put mapping error check in vring_map_one_sg
>        virtio_ring: introduce virtqueue_set_dma_premapped()
>        virtio_ring: support add premapped buf
>        virtio_ring: introduce virtqueue_dma_dev()
>        virtio_ring: skip unmap for premapped
>        virtio_ring: correct the expression of the description of virtqueue_resize()
>        virtio_ring: separate the logic of reset/enable from virtqueue_resize
>        virtio_ring: introduce virtqueue_reset()
>        virtio_ring: introduce dma map api for virtqueue
>        virtio_ring: introduce dma sync api for virtqueue
>        virtio_net: merge dma operations when filling mergeable buffers

Hi,
above patch (upstream commit 295525e29a5b) seems causing a virtnet 
related Call Trace after WARNING from kernel/dma/debug.c.

details (log and test setup) tracked in 
https://bugzilla.kernel.org/show_bug.cgi?id=218204

it's recently noticed in a TDX guest testing since v6.6.0 release cycle 
and can still be reproduced in latest v6.7.0-rc3.

as local bisects results show, above WARNING and Call Trace is linked 
with this patch, do you mind to take a look?

> Yuan Yao (1):
>        virtio_ring: fix avail_wrap_counter in virtqueue_add_packed
>
> Yue Haibing (1):
>        vdpa/mlx5: Remove unused function declarations
>
>   drivers/net/virtio_net.c           | 230 ++++++++++++++++++---
>   drivers/vdpa/mlx5/core/mlx5_vdpa.h |   3 -
>   drivers/vdpa/vdpa_sim/vdpa_sim.c   |   8 +
>   drivers/vhost/vdpa.c               |  15 +-
>   drivers/virtio/virtio_ring.c       | 412 ++++++++++++++++++++++++++++++++-----
>   drivers/virtio/virtio_vdpa.c       |  17 +-
>   include/linux/vdpa.h               |   4 +
>   include/linux/virtio.h             |  22 ++
>   include/uapi/linux/vhost_types.h   |   4 +
>   9 files changed, 625 insertions(+), 90 deletions(-)