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Re: [Qemu-devel] [PATCH v4 00/11] packed ring virtio-net backends suppor

From: Jason Wang
Subject: Re: [Qemu-devel] [PATCH v4 00/11] packed ring virtio-net backends support
Date: Tue, 19 Feb 2019 15:35:25 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 2019/2/14 下午12:26, address@hidden wrote:
From: Wei Xu <address@hidden>


Userspace and vhost-net backend test has been done with upstream kernel
in guest.

     - add version number to the subject of each patch.(mst)

     v2/01 - drop it since the header has been synchronized from kernel.(mst & 
     v3/01 - rename 'avail_wrap_counter' to 'last_avail_wrap_counter',
             'event_wrap_counter' to 'avail_wrap_counter' to make it easier
             to understand.(Jason)
           - revise commit message.(Jason)
     v3/02 - split packed ring areas size calculation to next patch.(Jason)
             to not break bisect(Jason).
     v3/03 - initialize packed ring region with correct size and attribute.
           - remove unnecessary 'else' checks. (Jason)
     v3/06 - add commit log.
           - replace 'event_wrap-counter' with 'avail_wrap_counter'.
           - merge common memory cache size check to 
           - revise memory barrier comment.(Jason)
           - check indirect descriptors by desc.len/sizeof(desc).(Jason)
           - flip wrap counter with '^=1'.(Jason)
     v3/07 - move desc.id/len initialization to the declaration.(Jason)
           - flip wrap counter '!' with '^=1'.(Jason)
           - add memory barrier comments in commit message.
     v3/08 - use offsetof() when writing cache.(Jason)
           - avoid duplicated memory region write when turning off event_idx
             supported notification.(Jason)
           - add commit log.(Jason)
           - add avail & last_avail wrap counter difference description in 
commit log.
     v3/09 - remove unnecessary used/avail idx/wrap-counter from subsection.
           - put new subsection to the end of vmstate_virtio.(Jason)
           - squash the two userspace and vhost-net migration patches in 
     v3/10 - reword commit message.
           - this is a help not a bug fix so I would like to keep it as a
             separate patch still.(Proposed a merge it by Jason)
           - the virtqueue_fill() is also not like an API so I would prefer not
             to touch it, please correct me if I did not get it in the right
             way.(Proposed a squash by Jason)
     v3/11 - squash feature bits for user space and vhost kernel/user backends.
           - enable packed ring feature bit provision on host by default.(Jason)

Wei Xu (11):
   virtio: rename structure for packed ring
   virtio: device/driver area size calculation helper for split ring
   virtio: initialize packed ring region
   virtio: initialize wrap counter for packed ring
   virtio: queue/descriptor check helpers for packed ring
   virtio: get avail bytes check for packed ring
   virtio: fill/flush/pop for packed ring
   virtio: event suppression support for packed ring
   virtio-net: update the head descriptor in a chain lastly
   virtio: migration support for packed ring
   virtio: CLI and provide packed ring feature bit by default

  hw/net/vhost_net.c         |   2 +
  hw/net/virtio-net.c        |  11 +-
  hw/virtio/virtio.c         | 798 +++++++++++++++++++++++++++++++++++++++++----
  include/hw/virtio/virtio.h |   4 +-
  4 files changed, 757 insertions(+), 58 deletions(-)

Looks like there's something missed in the series. e.g the support of:




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