Michael Buesch wrote:

So, I will submit a patch to lower the udelay(10) to udelay(1)
and we can close the discussion? ;)

No, that totally avoids my point.  Your "otherwise idle machine" test is 
probably nowhere near worst case in the field, for loops that can 
potentially lock the CPU for a long time upon hardware fault.  And then 
there are the huge delays in specific functions that I pointed out...

	Jeff