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authorDr. David Alan Gilbert <dgilbert@redhat.com>2018-03-12 17:20:58 +0000
committerMichael S. Tsirkin <mst@redhat.com>2018-03-20 05:03:27 +0200
commit2ce16640b4cc9ab9e7e6bde9e4264b102e0eb73d (patch)
treed35a0ed702eaf057ffbd886db9c54d911ee2dd76 /hw/virtio/vhost-user.c
parentf90bb71bfdaca6ece1696e194aad11fb8599ffba (diff)
downloadfocaccia-qemu-2ce16640b4cc9ab9e7e6bde9e4264b102e0eb73d.tar.gz
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postcopy: use UFFDIO_ZEROPAGE only when available
Use a flag on the RAMBlock to state whether it has the
UFFDIO_ZEROPAGE capability, use it when it's available.

This allows the use of postcopy on tmpfs as well as hugepage
backed files.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio/vhost-user.c')
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