From: sashiko-bot@kernel.org
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
"Eugenio Perez" <eperezma@redhat.com>,
virtualization@lists.linux.dev
Subject: Re: [PATCH v4 1/3] virtio: synchronize callbacks after device reset
Date: Sat, 12 Sep 2026 10:37:27 +0000 [thread overview]
Message-ID: <20260912103728.351E51F0089F@smtp.kernel.org> (raw)
In-Reply-To: <8ae2995ee649adcfe1398f7f1c4fc9f7028c3db1.1789204858.git.mst@redhat.com>
> virtio_reset_device says:
> Note: this guarantees that vq callbacks are not in progress
> but in practice, only virtio pci correctly synchronizes the cbs.
>
> On other transports, a callback that is already executing, keeps running
> while the driver tears down the state it uses.
>
> Add virtio_synchronize_cbs to virtio_reset_device fixing this for all
> transports that correctly implement synchronize_cbs().
>
> Reported-by: Karl Mehltretter <kmehltretter@gmail.com>
> Link: https://lore.kernel.org/all/20260818040433.66986-1-kmehltretter@gmail.com/
> Fixes: c46eccdaadab ("virtio: document virtio_reset_device")
> Tested-by: Karl Mehltretter <kmehltretter@gmail.com>
> Acked-by: Karl Mehltretter <kmehltretter@gmail.com>
> Assisted-by: LLM
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1789204858.git.mst@redhat.com?part=1
next prev parent reply other threads:[~2026-09-12 10:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-12 10:30 [PATCH v4 0/3] virtio: fix callback synchronization and avq cleanup on reset Michael S. Tsirkin
2026-09-12 10:30 ` [PATCH v4 1/3] virtio: synchronize callbacks after device reset Michael S. Tsirkin
2026-09-12 10:37 ` sashiko-bot [this message]
2026-09-12 10:30 ` [PATCH v4 2/3] virtio_pci_modern: move avq cleanup from reset to del_vqs Michael S. Tsirkin
2026-09-12 10:51 ` sashiko-bot
2026-09-12 10:30 ` [PATCH v4 3/3] virtio_pci: drop callback sync on reset Michael S. Tsirkin
2026-09-12 10:43 ` sashiko-bot
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