Below commands and gdbstub are updated to provide basic supporting for debugging encrypted guest: target_memory_rw_debug() memory_dump() hmp_sum() qmp_pmemsave() tlb_info_32() tlb_info_pae32() tlb_info_la48() tlb_info_la57() mem_info_32() mem_info_pae32() mem_info_la48() mem_info_la57() Signed-off-by: Yao Yuan <yuan.yao@intel.com>