On 03/07/2016 10:24 AM, Khalid Aziz wrote:

Tags can be cleared by user by setting tag to 0. Tags are 
automatically cleared by the hardware when the mapping for a virtual 
address is removed from TSB (which is why swappable pages are a 
problem), so kernel does not have to do it as part of clean up.

I don't understand this. The hardware isn't involved  when a mapping for 
a virtual address is removed from the TSB, so how could it automatically 
clear tags?

Rob

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