Re: [PATCH] doc: Clarify IOMMU usage with "uio-pci" kernel module

["Tone Zhang (Arm Technology China)" <Tone.Zhang@arm.com>]

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