hostmem: add property to map memory with MAP_SHARED
A new "share" property can be used with the "memory-file" backend to map memory with MAP_SHARED instead of MAP_PRIVATE. Signed-off-by:Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Hu Tao <hutao@cn.fujitsu.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
Michael S. Tsirkin <mst@redhat.com>
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