[dpdk-stable] [PATCH v2] net/virtio: revert forcing IOVA as VA mode for virtio-user

Ferruh Yigit ferruh.yigit at intel.com
Thu Sep 30 12:58:52 CEST 2021


On 9/30/2021 9:24 AM, David Marchand wrote:
> On Thu, Sep 30, 2021 at 10:13 AM Maxime Coquelin
> <maxime.coquelin at redhat.com> wrote:
>>
>> This patch removes the simplification in Virtio descriptors
>> handling, where their buffer addresses are IOVAs for Virtio
>> PCI devices, and VA-only for Virtio-user devices, which
>> added a requirement on Virtio-user that it only supported
>> IOVA as VA.
>>
>> This change introduced a regression for applications using
>> Virtio-user and other physical PMDs that require IOVA as PA
>> because they don't use an IOMMU.
>>
>> This patch reverts to the old behaviour, but needed to be
>> reworked because of the refactoring that happened in v21.02.
>>
>> Fixes: 17043a2909bb ("net/virtio: force IOVA as VA mode for virtio-user")
>> Cc: stable at dpdk.org
>>
>> Reported-by: Olivier Matz <olivier.matz at 6wind.com>
>> Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> 
> I think you can keep:
> Tested-by: Olivier Matz <olivier.matz at 6wind.com>
> 
> Reviewed-by: David Marchand <david.marchand at redhat.com>
> 

Applied to dpdk-next-net/main, thanks.


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