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virtio: add vhost-user-base and a generic vhost-user-device

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In theory we shouldn't need to repeat so much boilerplate to support
vhost-user backends. This provides a generic vhost-user-base QOM
object and a derived vhost-user-device for which the user needs to
provide the few bits of information that aren't currently provided by
the vhost-user protocol. This should provide a baseline implementation
from which the other vhost-user stub can specialise.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230710153522.3469097-8-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alex Bennée 2023-07-10 16:35:09 +01:00 • committed by Michael S. Tsirkin
parent f05356f84d
commit eee7780973
4 changed files with 443 additions and 0 deletions
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3
hw/virtio/meson.build
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@ -15,7 +15,10 @@ if have_vhost
system_virtio_ss.add(files('vhost.c'))
specific_virtio_ss.add(files('vhost-backend.c', 'vhost-iova-tree.c'))
if have_vhost_user
# fixme - this really should be generic
specific_virtio_ss.add(files('vhost-user.c'))
system_virtio_ss.add(files('vhost-user-device.c'))
system_virtio_ss.add(when: 'CONFIG_VIRTIO_PCI', if_true: files('vhost-user-device-pci.c'))
endif
if have_vhost_vdpa
system_virtio_ss.add(files('vhost-vdpa.c'))