Messages in this thread | | | Date | Mon, 07 Mar 2016 14:16:00 -0500 (EST) | Subject | Re: [PATCH v2] sparc64: Add support for Application Data Integrity (ADI) | From | David Miller <> |
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From: Khalid Aziz <khalid.aziz@oracle.com> Date: Mon, 7 Mar 2016 11:24:54 -0700
> 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.
You might be able to crib some bits for the Tag in the swp_entry_t, it's 64-bit and you can therefore steal bits from the offset field.
That way you'll have the ADI tag in the page tables, ready to re-install at swapin time.
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