[dpdk-stable] [PATCH] vhost: retranslate vring addr when memory table changes

[Yongseok Koh]

> On Aug 16, 2018, at 10:29 AM, Maxime Coquelin <maxime.coquelin at 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 at 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