[dpdk-stable] [PATCH] vhost: protect log addr translation in iotlb updates

[Maxime Coquelin]

On 2/13/20 11:04 AM, Adrian Moreno wrote:
> Currently, the log address translation only  happens in the vhost-user's
> translate_ring_addresses(). However, the IOTLB update handler is not
> checking if it was mapped to re-trigger that translation.
> 
> Since the log address mapping could fail, check it on iotlb updates.
> Also, check it on vring_translate() so we do not dirty pages if the
> logging address is not yet ready.
> 
> Additionally, properly protect the accesses to the iotlb structures.
> 
> Fixes: 657414f3788a ("vhost: protect log addr translation in iotlb updates")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Adrian Moreno <amorenoz at redhat.com>
> ---
>  lib/librte_vhost/vhost.c      | 55 +++++++++++++++++++++++++++++++++
>  lib/librte_vhost/vhost.h      | 15 +++++++--
>  lib/librte_vhost/vhost_user.c | 57 +++++++++++++++--------------------
>  3 files changed, 92 insertions(+), 35 deletions(-)
> 


Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

I will fix the fixline while applying.

Thanks!
Maxime