[dpdk-stable] [PATCH v6 0/3] vhost: add support for IOVA_VA mode
Maxime Coquelin
maxime.coquelin at redhat.com
Wed Oct 16 13:11:39 CEST 2019
On 10/9/19 1:54 PM, Adrian Moreno wrote:
> Currently, IOVAs are assumed to be GPA when the dirty page logging
> is performed.
>
> Add support for guest IOVA_VA mode by translating addresses
> to GPA before doing the dirty page logging.
>
> Also, the guest_pages tracking mechanism used for zero_copy will not work
> either if IOVA_VA is enabled. In fact, enabling dequeue_zero_copy and
> IOMMU is dangerous altogether because IOTLB invalidation of guest
> pages can happen while the buffers are being used. So, ensure this
> cannot happen by preventing both features to be activated
> simultaneously.
>
> Further information: https://bugs.dpdk.org/show_bug.cgi?id=337
>
> Fixes: 69c90e98f483 ("vhost: enable IOMMU support")
> Cc: maxime.coquelin at redhat.com
> Cc: stable at dpdk.org
>
> ---
> v6 changes: Change log string to fix UB1604-32 build
> v5 changes: Rebase on top of dpdk-next-virtio
> v4 changes: Address review comments
> v3 changes: Address style warnings
> v2 changes: Also translate buffer addresses
> ----
>
> Adrian Moreno (3):
> vhost: translate incoming log address to gpa
> vhost: convert buffer addresses to GPA for logging
> vhost: prevent zero copy mode if iommu is on
>
> lib/librte_vhost/rte_vhost.h | 2 +-
> lib/librte_vhost/socket.c | 8 ++++++
> lib/librte_vhost/vdpa.c | 3 ++-
> lib/librte_vhost/vhost.c | 41 ++++++++++++++++++++++++++++
> lib/librte_vhost/vhost.h | 51 +++++++++++++++++++++++++++++++++++
> lib/librte_vhost/vhost_user.c | 42 ++++++++++++++++++++++++++++-
> lib/librte_vhost/virtio_net.c | 12 +++++----
> 7 files changed, 151 insertions(+), 8 deletions(-)
>
Applied to dpdk-next-virtio/master.
Thanks,
Maxime
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