From: "Hu, Jiayu" <jiayu.hu@intel.com>
To: "Jiang, Cheng1" <cheng1.jiang@intel.com>,
"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"Xia, Chenbo" <chenbo.xia@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"Yang, YvonneX" <yvonnex.yang@intel.com>,
"Wang, Yinan" <yinan.wang@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] examples/vhost: fix ioat ring space in callbacks
Date: Wed, 17 Mar 2021 06:58:55 +0000 [thread overview]
Message-ID: <d0db92d5ba244eba8fea5468433973d4@intel.com> (raw)
In-Reply-To: <20210317054054.34616-1-Cheng1.jiang@intel.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
> -----Original Message-----
> From: Jiang, Cheng1 <cheng1.jiang@intel.com>
> Sent: Wednesday, March 17, 2021 1:41 PM
> To: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>
> Cc: dev@dpdk.org; Hu, Jiayu <jiayu.hu@intel.com>; Yang, YvonneX
> <yvonnex.yang@intel.com>; Wang, Yinan <yinan.wang@intel.com>; Jiang,
> Cheng1 <cheng1.jiang@intel.com>; stable@dpdk.org
> Subject: [PATCH] examples/vhost: fix ioat ring space in callbacks
>
> We use ioat ring space for determining if ioat callbacks can enqueue a
> packet to ioat device. But there is one slot can't be used in ioat
> ring due to the ioat driver design, so we need to reduce one slot in
> ioat ring to prevent ring size mismatch in ioat callbacks.
>
> Fixes: 2aa47e94bfb2 ("examples/vhost: add ioat ring space count and check")
> Cc: stable@dpdk.org
>
> Signed-off-by: Cheng Jiang <Cheng1.jiang@intel.com>
> ---
> examples/vhost/ioat.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/examples/vhost/ioat.c b/examples/vhost/ioat.c
> index 60b73be93..9cb5e0d50 100644
> --- a/examples/vhost/ioat.c
> +++ b/examples/vhost/ioat.c
> @@ -113,7 +113,7 @@ open_ioat(const char *value)
> goto out;
> }
> rte_rawdev_start(dev_id);
> - cb_tracker[dev_id].ioat_space = IOAT_RING_SIZE;
> + cb_tracker[dev_id].ioat_space = IOAT_RING_SIZE - 1;
> dma_info->nr++;
> i++;
> }
> --
> 2.29.2
next prev parent reply other threads:[~2021-03-17 6:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-17 5:40 Cheng Jiang
2021-03-17 6:58 ` Hu, Jiayu [this message]
2021-04-07 7:47 ` Maxime Coquelin
2021-04-07 7:54 ` Hu, Jiayu
2021-04-13 8:50 ` Maxime Coquelin
2021-04-13 9:55 ` Jiang, Cheng1
2021-04-07 8:26 ` Thomas Monjalon
2021-04-07 8:43 ` Thomas Monjalon
2021-04-18 15:10 ` Liang Ma
2021-04-07 8:48 ` Maxime Coquelin
2021-04-28 2:09 ` Xia, Chenbo
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