[openib-general] is_sm bit redux

[Michael S. Tsirkin]

Hello!
Quoting r. Hal Rosenstock (halr at voltaire.com) "[openib-general] is_sm bit redux":
> Hi,
> 
> I would like to make a call for consensus on the is_sm bit. It seems
> like there are two alternatives: (1) separate file, or (2) special
> write.
> 
> Are there any strong technical reasons for choosing one approach over
> the other ? Is a separate file any better or worse than a special write
> ?
> 
> If not, can one be chosen and just move on ? Given the Linux way, we can
> always undo this if we learn more down the road.
> 
> Thanks.
> 
> -- Hal

I dont believe there are strong reasons, either way.
I'm for separate file, if we change it, old software will
get a clearer error (unable to open is_sm file ...)