Thread (91 messages) 91 messages, 11 authors, 2018-12-13

Re: [RFC v2 00/13] Multi-Key Total Memory Encryption API (MKTME)

From: Dave Hansen <hidden>
Date: 2018-12-06 14:59:12
Also in: keyrings, linux-mm

On 12/6/18 3:22 AM, Kirill A. Shutemov wrote:
quoted
When you say "disable encryption to a page" does the encryption get
actually disabled or does the CPU just decrypt it transparently i.e.
what happens physically?
Yes, it gets disabled. Physically. It overrides TME encryption.
I know MKTME itself has a runtime overhead and we expect it to have a
performance impact in the low single digits.  Does TME have that
overhead?  Presumably MKTME plus no-encryption is not expected to have
the overhead.

We should probably mention that in the changelogs too.
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