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This will enable vdpa providers to add support for multi queue feature
and publish it to upper layers (vhost and virtio).
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-7-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Some legacy guests just assume features are 0 after reset.
We detect that config space is accessed before features are
set and set features to 0 automatically.
Note: some legacy guests might not even access config space, if this is
reported in the field we might need to catch a kick to handle these.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Fix two typos in the comments for __vdpa_alloc_device().
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200527060528.9100-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The function should be called only after a success calling for
vdpa_alloc_device().
Reported-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200413093738.28467-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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We have both vhost and virtio drivers that depend on vdpa.
It's easier to locate it at a top level directory otherwise
we run into issues e.g. if vhost is built-in but virtio
is modular. Let's just move it up a level.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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