From: "Xueming(Steven) Li" <xuemingl@nvidia.com>
To: "maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: Matan Azrad <matan@nvidia.com>,
Slava Ovsiienko <viacheslavo@nvidia.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH v2 1/2] vdpa/mlx5: workaround FW first completion in start
Date: Thu, 21 Oct 2021 12:36:30 +0000 [thread overview]
Message-ID: <6d2c9ec2f616d14db5190c21b6c02eb304831357.camel@nvidia.com> (raw)
In-Reply-To: <3d5b90a7-22fe-0b54-8ad0-f51b553928b2@redhat.com>
On Thu, 2021-10-21 at 14:27 +0200, Maxime Coquelin wrote:
>
> On 10/15/21 17:05, Xueming Li wrote:
> > After a vDPA application restart, qemu restores VQ with used and
> > available index, new incoming packet triggers virtio driver to
> > handle buffers. Under heavy traffic, no available buffer for
> > firmware to receive new packets, no Rx interrupts generated,
> > driver is stuck on endless interrupt waiting.
> >
> > As a firmware workaround, this patch sends a notification after
> > VQ setup to ask driver handling buffers and filling new buffers.
> >
> > Fixes: bff735011078 ("vdpa/mlx5: prepare virtio queues")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Xueming Li <xuemingl@nvidia.com>
> > Reviewed-by: Matan Azrad <matan@nvidia.com>
> > ---
> > drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
>
>
> Applied to dpdk-next-virtio/main.
Thanks Maxime!
>
> Thanks,
> Maxime
>
prev parent reply other threads:[~2021-10-21 12:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210923081758.178745-1-xuemingl@nvidia.com>
2021-10-15 13:43 ` [dpdk-stable] [PATCH v1 " Xueming Li
2021-10-15 13:43 ` [dpdk-stable] [PATCH v1 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart Xueming Li
2021-10-15 13:57 ` [dpdk-stable] [PATCH v1 1/2] vdpa/mlx5: workaround FW first completion in start Maxime Coquelin
2021-10-15 14:51 ` Xueming(Steven) Li
2021-10-15 15:05 ` [dpdk-stable] [PATCH v2 " Xueming Li
2021-10-15 15:05 ` [dpdk-stable] [PATCH v2 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart Xueming Li
2021-10-21 9:40 ` Maxime Coquelin
2021-10-21 12:27 ` Maxime Coquelin
2021-10-21 9:40 ` [dpdk-stable] [PATCH v2 1/2] vdpa/mlx5: workaround FW first completion in start Maxime Coquelin
2021-10-21 12:27 ` Maxime Coquelin
2021-10-21 12:36 ` Xueming(Steven) Li [this message]
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