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And require it be used instead of direct munmap. This will allow e.g. Valgrind hooks to help track incorrect use of foreign mappings. Switch all uses of xenforeignmemory_map to use xenforeignmemory_unmap, not that foreign mappings via the libxc compat xc_map_foreign_* interface will not take advantage of this and will need converting. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>