[PATCH v3 0/4] vhost: add device op to offload the interrupt kick
Maxime Coquelin
maxime.coquelin at redhat.com
Thu Jun 1 22:00:11 CEST 2023
On 5/17/23 11:08, Eelco Chaudron wrote:
> This series adds an operation callback which gets called every time the
> library wants to call eventfd_write(). This eventfd_write() call could
> result in a system call, which could potentially block the PMD thread.
>
> The callback function can decide whether it's ok to handle the
> eventfd_write() now or have the newly introduced function,
> rte_vhost_notify_guest(), called at a later time.
>
> This can be used by 3rd party applications, like OVS, to avoid system
> calls being called as part of the PMD threads.
>
> v3:
> - Changed ABI compatibility code to no longer use a boolean
> to avoid having to disable specific GCC warnings.
> - Moved the fd check fix to a separate patch (patch 3/4).
> - Fixed some coding style issues.
>
> v2: - Used vhost_virtqueue->index to find index for operation.
> - Aligned function name to VDUSE RFC patchset.
> - Added error and offload statistics counter.
> - Mark new API as experimental.
> - Change the virtual queue spin lock to read/write spin lock.
> - Made shared counters atomic.
> - Add versioned rte_vhost_driver_callback_register() for
> ABI compliance.
>
> Eelco Chaudron (4):
> vhost: change vhost_virtqueue access lock to a read/write one
> vhost: make the guest_notifications statistic counter atomic
> vhost: fix invalid call FD handling
> vhost: add device op to offload the interrupt kick
>
>
> lib/eal/include/generic/rte_rwlock.h | 17 +++++
> lib/vhost/meson.build | 2 +
> lib/vhost/rte_vhost.h | 23 ++++++-
> lib/vhost/socket.c | 63 +++++++++++++++++--
> lib/vhost/version.map | 9 +++
> lib/vhost/vhost.c | 92 +++++++++++++++++++++-------
> lib/vhost/vhost.h | 69 ++++++++++++++-------
> lib/vhost/vhost_user.c | 14 ++---
> lib/vhost/virtio_net.c | 90 +++++++++++++--------------
> 9 files changed, 278 insertions(+), 101 deletions(-)
>
Applied to dpdk-next-virtio/main.
Thanks,
Maxime
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