[dpdk-dev] [PATCH 12/21] vhost: introduce guest IOVA to backend VA helper

[Tiwei Bie]

On Thu, Aug 31, 2017 at 11:50:14AM +0200, Maxime Coquelin wrote:
> This patch introduces vhost_iova_to_vva() function to translate
> guest's IO virtual addresses to backend's virtual addresses.
> 
> When IOMMU is enabled, the IOTLB cache is queried to get the
> translation. If missing from the IOTLB cache, an IOTLB_MISS request
> is sent to Qemu, and IOTLB cache is queried again on IOTLB event
> notification.
> 
> When IOMMU is disabled, the passed address is a guest's physical
> address, so the legacy rte_vhost_gpa_to_vva() API is used.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> ---
>  lib/librte_vhost/vhost.c | 27 +++++++++++++++++++++++++++
>  lib/librte_vhost/vhost.h |  3 +++
>  2 files changed, 30 insertions(+)
> 
> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
> index bae98b02d..0e8c0386a 100644
> --- a/lib/librte_vhost/vhost.c
> +++ b/lib/librte_vhost/vhost.c
> @@ -48,9 +48,11 @@
>  #include <rte_malloc.h>
>  #include <rte_rwlock.h>
>  #include <rte_vhost.h>
> +#include <rte_rwlock.h>

This header isn't needed.

Best regards,
Tiwei Bie