Tracking vm activity

[Stone, Joshua I]

William Cohen wrote:
> I am playing around with getting information about page faults and I 
> noticed that there is a probe alias for the entry for the pagefault 
> code. However, there is no matching probe point for the return. It is 
> useful to look at the return value to determine what kind of page fault 
> occurred (major or minor). The attached patch provides a similar probe 
> point for the return point. any comments on the patch?

I see that you committed it, and added a variable for the return value 
(fault_type).  Could you elaborate in the documentation what the 
possible types are (major, minor) and their values?

Thanks,

Josh