b6f3067985
Pages that have been ballooned are useful for other Xen drivers doing grant table actions, because these pages have valid struct page/PFNs but have no valid MFN so are available for remapping. Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> [v2: Deal with rebasing on top of modified balloon code] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>