Hi, all, Excuse me. Here is a question mail. How to get a reliable stack of tasks on mips? First, why save_stack_trace_tsk() to get stack is unreliable? Is it because the asm code does not obey with gcc's stack rules, or others? Secondly, can we use some methods to make the task stack reliable? For example, use the fp register, can this method work? But it seems make no sense for asm code unless each asm code do some fp work. I found that the powerpc implemented save_stack_trace_tsk_reliable(), and the x86 and s390 implemented the arch_stack_walk_reliable(). x86 implemented it through ORC unwind. For powerpc, it may implement it through its ABI (I guess, I'm not familiar with them). Do we have a chance to implement it in some way? Finally, I found that some emails related to ORC unwind on ARM from the livepatch mail list. It is difficult for me to understand. Is anyone interested in ORC unwind on MIPS and have researched it? Any comment is welcome. :-) Thanks!
