From: Yongseok Koh <yskoh@mellanox.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: "stable@dpdk.org" <stable@dpdk.org>,
"bluca@debian.org" <bluca@debian.org>
Subject: Re: [dpdk-stable] [PATCH] vhost: retranslate vring addr when memory table changes
Date: Thu, 16 Aug 2018 17:55:23 +0000 [thread overview]
Message-ID: <C89E408D-54A1-48A0-B83B-16EE9292DB88@mellanox.com> (raw)
In-Reply-To: <20180816172922.20775-1-maxime.coquelin@redhat.com>
> On Aug 16, 2018, at 10:29 AM, Maxime Coquelin <maxime.coquelin@redhat.com> wrote:
>
> [ Backported from upstream commit d5022533c20aed365d513663806a999459037015 ]
>
> When the vhost-user master sends memory updates using
> VHOST_USER_SET_MEM request, the user backends unmap and then
> mmap again the memory regions in its address space.
>
> If the ring addresses have already been translated, it needs to
> be translated again as they point to unmapped memory.
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>
> Hi Yongseok,
>
> This patch is already in upstream master since v18.05, but wasn't
> backported to stable because it initially fixed a bug in a new
> feature.
>
> I have been reported of a crash in the vhost-user library that
> this patch fixes, so we would need to backport this patch to
> v17.11 LTS.
Many thanks.
Applied to stable/17.11
Yongseok
prev parent reply other threads:[~2018-08-16 17:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-16 17:29 Maxime Coquelin
2018-08-16 17:55 ` Yongseok Koh [this message]
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