Re: pud_bad vs pud_bad

[Jeremy Fitzhardinge]

Ingo Molnar wrote:
> But the 32-bit check does the exact same thing but via a single binary 
> operation: it checks whether any bits outside of those bits are zero - just 
> via a simpler test that compiles to more compact code.
>
> So i'd go with the 32-bit version. (unless there are some sign-extension 
> complications i'm missing - but i think we got rid of those already.)

OK, fair enough.  I wouldn't be surprised if gcc does that transform 
anyway, but we may as well be consistent about it.

   J
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