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From: Maxime Coquelin <>
To: Olivier Matz <>
Subject: Re: [dpdk-stable] [PATCH] net/virtio: revert forcing IOVA as VA mode for virtio-user
Date: Thu, 30 Sep 2021 10:25:13 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <YVTXiYSQOxdVPNB4@platinum>

On 9/29/21 23:15, Olivier Matz wrote:
> 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!

You're welcome, thanks for reporting.

I just notice your reply to v1, so I missed to report your Tested-by on
v2 (which only has cosmetic changes). Feel free to add it.


  reply	other threads:[~2021-09-30  8:25 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
2021-09-30  8:25   ` Maxime Coquelin [this message]
2021-09-30  7:26 ` David Marchand
2021-09-30  7:43   ` Maxime Coquelin

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