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From:   =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
To:     virtualization@lists.linux-foundation.org,
        Jason Wang <jasowang@redhat.com>, kvm@vger.kernel.org,
        "Michael S. Tsirkin" <mst@redhat.com>, netdev@vger.kernel.org,
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Cc:     Stefano Garzarella <sgarzare@redhat.com>,
        Longpeng <longpeng2@huawei.com>,
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        Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
        tanuj.kamde@amd.com, eperezma@redhat.com,
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        martinpo@xilinx.com, lulu@redhat.com, ecree.xilinx@gmail.com,
        Parav Pandit <parav@nvidia.com>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        Zhang Min <zhang.min9@zte.com.cn>
Subject: [PATCH 0/4] Implement vdpasim stop operation
Date:   Fri, 20 May 2022 19:23:21 +0200
Message-Id: <20220520172325.980884-1-eperezma@redhat.com>
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Implement stop operation for vdpa_sim devices, so vhost-vdpa will offer=0D
that backend feature and userspace can effectively stop the device.=0D
=0D
This is a must before get virtqueue indexes (base) for live migration,=0D
since the device could modify them after userland gets them. There are=0D
individual ways to perform that action for some devices=0D
(VHOST_NET_SET_BACKEND, VHOST_VSOCK_SET_RUNNING, ...) but there was no=0D
way to perform it for any vhost device (and, in particular, vhost-vdpa).=0D
=0D
Comments are welcome.=0D
=0D
Eugenio P=C3=A9rez (4):=0D
  vdpa: Add stop operation=0D
  vhost-vdpa: introduce STOP backend feature bit=0D
  vhost-vdpa: uAPI to stop the device=0D
  vdpa_sim: Implement stop vdpa op=0D
=0D
 drivers/vdpa/vdpa_sim/vdpa_sim.c     | 21 +++++++++++++++++++=0D
 drivers/vdpa/vdpa_sim/vdpa_sim.h     |  1 +=0D
 drivers/vdpa/vdpa_sim/vdpa_sim_net.c |  3 +++=0D
 drivers/vhost/vdpa.c                 | 31 ++++++++++++++++++++++++++++=0D
 include/linux/vdpa.h                 |  6 ++++++=0D
 include/uapi/linux/vhost.h           |  3 +++=0D
 include/uapi/linux/vhost_types.h     |  2 ++=0D
 7 files changed, 67 insertions(+)=0D
=0D
-- =0D
2.27.0=0D
=0D