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From: Olivier Matz <>
To: Maxime Coquelin <>
Subject: Re: [dpdk-stable] [PATCH] net/virtio: revert forcing IOVA as VA mode for virtio-user
Date: Wed, 29 Sep 2021 23:15:53 +0200	[thread overview]
Message-ID: <YVTXiYSQOxdVPNB4@platinum> (raw)
In-Reply-To: <>

Hi Maxime,

On Wed, Sep 29, 2021 at 10:17:39PM +0200, Maxime Coquelin 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:
> Reported-by: Olivier Matz <>
> Signed-off-by: Maxime Coquelin <>

Tested-by: Olivier Matz <>

Many thanks for your quick solution on this!

  reply	other threads:[~2021-09-29 21:15 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-29 20:17 Maxime Coquelin
2021-09-29 21:15 ` Olivier Matz [this message]
2021-09-30  8:25   ` Maxime Coquelin
2021-09-30  7:26 ` David Marchand
2021-09-30  7:43   ` Maxime Coquelin

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