We need to avoid clobbering existing table between starting of chunk movers and the moment we install target page table. Generate temporary table for this rather than hoping that we don't clobber existing one. Fixes 64-bit GhostBSD on 64-bit EFI. Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>