On 7/8/21 11:58 AM, Dave Hansen wrote:>> Logically its going to be 
tricky to figure out which exact entry caused

quoted

the fault, hence I dump any non-zero entry. I understand it may dump
some useless.

What's tricky about it?

Sure, there's a possibility that more than one entry could contribute to
a fault.  But, you always know *IF* an entry could contribute to a fault.

I'm fine if you run through the logic, don't find a known reason
(specific RMP entry) for the fault, and dump the whole table in that
case.  But, unconditionally polluting the kernel log with noise isn't
very nice for debugging.

The tricky part is to determine which undocumented bit to check to know 
that we should stop dump. I can go with your suggestion that first try 
with the known reasons and fallback to dump whole table for unknown 
reasons only.

thanks