From: "Mcnamara, John" <john.mcnamara@intel.com>
To: "Guo, Jia" <jia.guo@intel.com>,
"Zhang, Helin" <helin.zhang@intel.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, "Guo, Jia" <jia.guo@intel.com>,
"Guo@dpdk.org" <Guo@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3] doc: add known uio_pci_generic issue for i40e
Date: Thu, 19 Jan 2017 11:17:24 +0000 [thread overview]
Message-ID: <B27915DBBA3421428155699D51E4CFE2026B740D@IRSMSX103.ger.corp.intel.com> (raw)
In-Reply-To: <1484823403-24868-1-git-send-email-jia.guo@intel.com>
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Jeff Guo
> Sent: Thursday, January 19, 2017 10:57 AM
> To: Zhang, Helin <helin.zhang@intel.com>; Wu, Jingjing
> <jingjing.wu@intel.com>
> Cc: dev@dpdk.org; Guo, Jia <jia.guo@intel.com>; Guo@dpdk.org
> Subject: [dpdk-dev] [PATCH v3] doc: add known uio_pci_generic issue for
> i40e
>
> +
> +The uio_pci_generic module bind failed in X710/XL710/XXV710
> +-----------------------------------------------------------
> +
> +**Description**:
> + The “uio_pci_generic” module is not supported by XL710, since the
> errata of XL710
> + states that the Interrupt Status bit is not implemented. The errata is
> the item #71
> + from the `xl710 controller spec
> +
> <http://www.intel.com/content/www/us/en/embedded/products/networking/xl710
> -10-40-controller-spec-update.html>`_.
> + The hw limitation is the same as other X710/XXV710 NICs.
> +
> +**Implication**:
> + When bind the “uio_pci_generic” module, it probe device and check the
> Interrupt Status
Better as: When using ``bind uio_pci_generic``, it probes the device
> + bit. Since it is not supported by X710/XL710/XXV710, it return a
> *failed* value. The statement
> + that these products don’t support INTx masking, is indicated in the
> related `linux kernel commit
> + < https://git.kernel.org/cgit/linux/kernel/git/stable/linux-
> stable.git/commit/drivers/pci/quirks.c?id=8bcf4525c5d43306c5fd07e132bc8650
> e3491aec>`_.
> +
> +**Resolution/Workaround**:
> + Do not bind to use the “uio_pci_generic” module in X710/XL710/XXV710
> NICs.
Better as: Do not bind to ``uio_pci_generic`` in X710/XL710/XXV710 NICs.
next prev parent reply other threads:[~2017-01-19 11:18 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-23 2:35 [dpdk-dev] [PATCH] doc: add known issue for uio_pci_generic in XL710 Jeff Guo
2017-01-09 7:16 ` Wu, Jingjing
2017-01-11 7:48 ` [dpdk-dev] [PATCH v2] doc: add known uio_pci_generic issue for i40e Jeff Guo
2017-01-16 20:30 ` Ferruh Yigit
2017-01-17 17:00 ` Wu, Jingjing
2017-01-17 17:36 ` Ferruh Yigit
2017-01-18 2:48 ` Guo, Jia
2017-01-18 18:49 ` Ferruh Yigit
2017-01-11 8:13 ` Jeff Guo
2017-01-12 3:27 ` Jeff Guo
2017-01-17 14:12 ` Wu, Jingjing
2017-01-19 10:52 ` [dpdk-dev] [PATCH v3] " Jeff Guo
2017-01-19 10:56 ` Jeff Guo
2017-01-19 11:17 ` Mcnamara, John [this message]
2017-01-19 13:50 ` Guo, Jia
2017-01-19 14:53 ` Mcnamara, John
2017-01-20 2:28 ` Guo, Jia
2017-01-19 12:06 ` Ferruh Yigit
2017-01-19 13:53 ` Guo, Jia
2017-01-19 13:56 ` [dpdk-dev] [PATCH v4] " Jeff Guo
2017-01-20 2:51 ` Jeff Guo
2017-01-22 1:46 ` Jeff Guo
2017-01-22 2:03 ` Jeff Guo
2017-01-23 8:04 ` Mcnamara, John
2017-01-23 11:44 ` Ferruh Yigit
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