Re: faults and signals

[Benjamin Herrenschmidt]

> Yep, the flags field should be able to do that for you. Since we have
> the handle_mm_fault wrapper for machine faults, it isn't too hard to
> change the arguments: we should probably turn `write_access` into a
> flag so we don't have to push too many arguments onto the stack.
> 
> This way we can distinguish get_user_pages faults. And your
> architecture will have to switch over to using __handle_mm_fault, and
> distinguish kernel faults. Something like that?

Yes. Tho it's also fairly easy to just add an argument to the wrapper
and fix all archs... but yeah, I will play around.

Ben.


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