Re: [dpdk-dev] [PATCH v3 3/3] vhost: prevent zero copy mode if iommu is on

2019-10-08 Thread Adrian Moreno
On 10/8/19 8:23 AM, Tiwei Bie wrote: > On Fri, Sep 27, 2019 at 08:37:59PM +0200, Adrian Moreno wrote: >> The simltaneous use of dequeue_zero_copy and IOMMU is problematic. >> Not only because IOVA_VA mode is not supported but also because the >> potential invalidation of guest pages while the buffe

Re: [dpdk-dev] [PATCH v3 3/3] vhost: prevent zero copy mode if iommu is on

2019-10-07 Thread Tiwei Bie
On Fri, Sep 27, 2019 at 08:37:59PM +0200, Adrian Moreno wrote: > The simltaneous use of dequeue_zero_copy and IOMMU is problematic. > Not only because IOVA_VA mode is not supported but also because the > potential invalidation of guest pages while the buffers are in use, > is not handled. > > Prev

[dpdk-dev] [PATCH v3 3/3] vhost: prevent zero copy mode if iommu is on

2019-09-27 Thread Adrian Moreno
The simltaneous use of dequeue_zero_copy and IOMMU is problematic. Not only because IOVA_VA mode is not supported but also because the potential invalidation of guest pages while the buffers are in use, is not handled. Prevent these two features to be enabled simultaneosly. Fixes: 69c90e98f483 ("