Re: [PATCH v2] sparc64: Add support for Application Data Integrity (ADI)

[Rob Gardner]

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