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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Nicolas Chautru <nicolas.chautru@intel.com>, dev@dpdk.org
Cc: hernan.vargas@intel.com, stable@dpdk.org
Subject: Re: [PATCH v1 3/9] baseband/acc: remove interrupt support on VRB1
Date: Fri, 10 Feb 2023 09:31:36 +0100	[thread overview]
Message-ID: <505e346f-d24a-ab7b-f6fc-ee7beeea567a@redhat.com> (raw)
In-Reply-To: <20230209221929.265059-4-nicolas.chautru@intel.com>



On 2/9/23 23:19, Nicolas Chautru wrote:
> Not enabling interrupt in VRB1 PMD variant to avoid
> potential corner case.
> 
> Fixes: 3cabc8eaf524 ("baseband/acc200: support interrupt")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
> ---
>   drivers/baseband/acc/rte_vrb_pmd.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/baseband/acc/rte_vrb_pmd.c b/drivers/baseband/acc/rte_vrb_pmd.c
> index c43c08afe8..a111836e51 100644
> --- a/drivers/baseband/acc/rte_vrb_pmd.c
> +++ b/drivers/baseband/acc/rte_vrb_pmd.c
> @@ -586,6 +586,14 @@ vrb_intr_enable(struct rte_bbdev *dev)
>   {
>   	int ret;
>   	struct acc_device *d = dev->data->dev_private;
> +
> +	if (d->device_variant == VRB1_VARIANT) {
> +		/* On VRB1: cannot enable MSI/IR to avoid potential back-pressure corner case. */
> +		rte_bbdev_log(ERR, "VRB1 (%s) doesn't support any MSI/MSI-X interrupt\n",
> +				dev->data->name);
> +		return -ENOTSUP;
> +	}
> +
>   	/*
>   	 * MSI/MSI-X are supported.
>   	 * Option controlled by vfio-intr through EAL parameter.

Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

Thanks,
Maxime


  reply	other threads:[~2023-02-10  8:31 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-09 22:19 [PATCH v1 0/9] baseband/acc: VRB PMD fixes Nicolas Chautru
2023-02-09 22:19 ` [PATCH v1 1/9] baseband/acc: protection for TB negative scenario Nicolas Chautru
2023-02-10  8:17   ` Maxime Coquelin
2023-02-10 17:28     ` Chautru, Nicolas
2023-02-10 17:58   ` [PATCH v2 0/9] baseband/acc: VRB PMD fixes Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 1/9] baseband/acc: protection for TB negative scenario Nicolas Chautru
2023-02-23  8:56       ` Maxime Coquelin
2023-02-23 17:25         ` Chautru, Nicolas
2023-02-10 17:58     ` [PATCH v2 2/9] baseband/acc: remove interrupt support on VRB1 Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 3/9] baseband/acc: add explicit mbuf append for soft output Nicolas Chautru
2023-02-22 11:20       ` Maxime Coquelin
2023-02-10 17:58     ` [PATCH v2 4/9] baseband/acc: prevent to dequeue more than requested Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 5/9] baseband/acc: fix iteration counter in TB mode Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 6/9] baseband/acc: fix potential arithmetic overflow Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 7/9] baseband/acc: add support for 4GUL CRC drop in VRB PMD Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 8/9] baseband/acc: add support for 4GUL with SO and TB Nicolas Chautru
2023-02-10 17:58     ` [PATCH v2 9/9] baseband/acc: remove printf from PMD function Nicolas Chautru
2023-02-23  9:28     ` [PATCH v2 0/9] baseband/acc: VRB PMD fixes Maxime Coquelin
2023-02-09 22:19 ` [PATCH v1 2/9] baseband/acc: add support for 4GUL with SO and TB Nicolas Chautru
2023-02-10  8:30   ` Maxime Coquelin
2023-02-10 17:29     ` Chautru, Nicolas
2023-02-09 22:19 ` [PATCH v1 3/9] baseband/acc: remove interrupt support on VRB1 Nicolas Chautru
2023-02-10  8:31   ` Maxime Coquelin [this message]
2023-02-09 22:19 ` [PATCH v1 4/9] baseband/acc: add explicit mbuf apend for soft output Nicolas Chautru
2023-02-10  8:40   ` Maxime Coquelin
2023-02-10 17:35     ` Chautru, Nicolas
2023-02-09 22:19 ` [PATCH v1 5/9] baseband/acc: prevent to dequeue more than requested Nicolas Chautru
2023-02-10  9:39   ` Maxime Coquelin
2023-02-09 22:19 ` [PATCH v1 6/9] baseband/acc: fix iteration counter in TB mode Nicolas Chautru
2023-02-10  9:40   ` Maxime Coquelin
2023-02-09 22:19 ` [PATCH v1 7/9] baseband/acc: fix potential arithmetic overflow Fix potential issue of overflow causing coverity warning Nicolas Chautru
2023-02-10  9:41   ` Maxime Coquelin
2023-02-09 22:19 ` [PATCH v1 8/9] baseband/acc: add support for 4GUL CRC drop in VRB PMD Nicolas Chautru
2023-02-10  9:43   ` Maxime Coquelin
2023-02-09 22:19 ` [PATCH v1 9/9] baseband/acc: remove printf from PMD function Nicolas Chautru
2023-02-10  9:45   ` Maxime Coquelin
2023-02-10 17:46     ` Chautru, Nicolas

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