[dpdk-dev] [PATCH 12/21] vhost: introduce guest IOVA to backend VA helper
maxime.coquelin at redhat.com
Tue Sep 5 09:05:40 CEST 2017
On 09/05/2017 06:14 AM, Tiwei Bie wrote:
> 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
>> 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.
Right, I'll remove it.
> Best regards,
> Tiwei Bie
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