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

David Marchand david.marchand at redhat.com
Thu Sep 30 10:24:56 CEST 2021


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>

Thanks.

-- 
David Marchand



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