DPDK patches and discussions
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From: Stephen Hemminger <stephen@networkplumber.org>
To: "Tone Zhang (Arm Technology China)" <Tone.Zhang@arm.com>
Cc: Rami Rosen <roszenrami@gmail.com>, "dev@dpdk.org" <dev@dpdk.org>,
	nd <nd@arm.com>
Subject: Re: [dpdk-dev] [PATCH] doc: Clarify IOMMU usage with "uio-pci" kernel module
Date: Wed, 5 Sep 2018 10:22:16 +0100	[thread overview]
Message-ID: <20180905102216.0ecd182f@shemminger-XPS-13-9360> (raw)
In-Reply-To: <AM0PR08MB340928817C92238B5F1F8F7F8F020@AM0PR08MB3409.eurprd08.prod.outlook.com>

On Wed, 5 Sep 2018 00:20:29 +0000
"Tone Zhang (Arm Technology China)" <Tone.Zhang@arm.com> wrote:

> Hi Rami,
> 
> Yes, I mean “uio_pci_generic” kernel module.
> 
> I will update the change accordingly.
> 
> Thanks.
> 
> Br,
> Tone
> 
> From: Rami Rosen <roszenrami@gmail.com>
> Sent: Wednesday, September 5, 2018 3:55 AM
> To: Tone Zhang (Arm Technology China) <Tone.Zhang@arm.com>
> Cc: dev@dpdk.org; nd <nd@arm.com>
> Subject: Re: [dpdk-dev] [PATCH] doc: Clarify IOMMU usage with "uio-pci" kernel module
> 
> Hi Tone,
> >if the devices for used DPDK bound to the ``uio-pci`` kernel module, please make  
> 
> The three kernel modules which can be used for DPDK binding are vfio-pci, uio_pci_generic and igb_uio. Don't you mean here uio_pci_generic ?
> 
> Regards,
> Rami Rosen
> 
> 
> בתאריך יום ג׳, 4 בספט׳ 2018, 11:59, מאת tone.z
> When binding the devices used by DPDK to the "uio-pci" kernel module,
> the IOMMU should be disabled in order not to break the
> because of the virtual / physical address mapping.
> 
> The patch clarifies the IOMMU configuration on both x86_64 and arm64
> systems.
> 
> Signed-off-by: tone.zhang <tone.zhang@arm.com<mailto:tone.zhang@arm.com>>
> ---
>  doc/guides/linux_gsg/linux_drivers.rst | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/doc/guides/linux_gsg/linux_drivers.rst b/doc/guides/linux_gsg/linux_drivers.rst
> index 371a817..8f9ec8f 100644
> --- a/doc/guides/linux_gsg/linux_drivers.rst
> +++ b/doc/guides/linux_gsg/linux_drivers.rst
> @@ -48,6 +48,13 @@ be loaded as shown below:
>     ``vfio-pci``
> 2.7.4

Also, it would be good if documentation was clear in recommending using VFIO
instead if IOMMU is present.

  reply	other threads:[~2018-09-05  9:22 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-04  8:59 tone.zhang
2018-09-04  9:16 ` Gavin Hu (Arm Technology China)
2018-09-04 10:06 ` Bruce Richardson
2018-09-04 10:15   ` Luca Boccassi
2018-09-04 10:25     ` Tone Zhang (Arm Technology China)
2018-09-04 19:55 ` Rami Rosen
2018-09-05  0:20   ` Tone Zhang (Arm Technology China)
2018-09-05  9:22     ` Stephen Hemminger [this message]
2018-09-05  9:49       ` Tone Zhang (Arm Technology China)
2018-09-05  4:39 ` [dpdk-dev] [PATCH v2] doc: Clarify IOMMU usage with "uio_pci_generic" " tone.zhang
2018-09-05  5:17   ` [dpdk-dev] [PATCH v3] " tone.zhang
2018-09-05  5:23     ` Gavin Hu (Arm Technology China)
2018-09-19  7:44     ` Tone Zhang (Arm Technology China)
2018-09-19 11:33       ` Bruce Richardson
2018-09-19 11:54         ` Luca Boccassi
2018-09-21  2:39           ` Tone Zhang (Arm Technology China)
2018-09-19 10:42     ` Luca Boccassi
2018-09-21  3:07     ` [dpdk-dev] [PATCH v4] " tone.zhang
2018-09-21 11:20       ` Bruce Richardson
2018-09-25  6:18         ` Tone Zhang (Arm Technology China)
2018-09-25  6:54       ` [dpdk-dev] [PATCH v5] " tone.zhang
2018-09-26  5:08         ` [dpdk-dev] [PATCH v6] " tone.zhang
2018-11-19  0:04           ` Thomas Monjalon

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