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Callers of xen_remap_domain_range() need to know if the remap failed because frame is currently paged out. So they can retry the remap later on. Return -ENOENT in this case. This assumes that the error codes returned by Xen are a subset of those used by the kernel. It is unclear if this is defined as part of the hypercall ABI. Acked-by: Andres Lagar-Cavilla <andres@lagarcavilla.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>