linux-kernel - [RFC v2 0/4] Support reconnection in vduse

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Message-Id: <20230912030008.3599514-1-lulu@redhat.com>
Date:   Tue, 12 Sep 2023 11:00:04 +0800
From:   Cindy Lu <lulu@...hat.com>
To:     lulu@...hat.com, jasowang@...hat.com, mst@...hat.com,
        maxime.coquelin@...hat.com, xieyongji@...edance.com,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Cc:     stable@...r.kernel.org
Subject: [RFC v2 0/4] Support reconnection in vduse

These patches add the reconnect support in vduse, The steps
is map the pages from kernel to userspace, userspace    
app will sync the reconnection status and vq_info in the pages
Also, add the new IOCTL VDUSE_GET_RECONNECT_INFO
userspace app will use this information to mmap the memory

Will send the patch for DPDK later

Tested in vduse + dpdk test-pmd
 
Signed-off-by: Cindy Lu <lulu@...hat.com>

Cindy Lu (4):
  vduse: Add function to get/free the pages for reconnection
  vduse: Add file operation for mmap
  vduse: update the vq_info in ioctl
  vduse: Add new ioctl VDUSE_GET_RECONNECT_INFO

 drivers/vdpa/vdpa_user/vduse_dev.c | 177 +++++++++++++++++++++++++++++
 include/uapi/linux/vduse.h         |  21 ++++
 2 files changed, 198 insertions(+)

-- 
2.34.3