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A proposed API for full-memory encryption

A proposed API for full-memory encryption

Posted Jan 20, 2019 16:15 UTC (Sun) by Freeaqingme (guest, #103259)
Parent article: A proposed API for full-memory encryption

I wonder how widespread the use of CPU hotplugging is, especially on bare metal. I've always seen it as a rather obscure use case that perhaps occasionally used in mainframes or something. If that's the case, one could simply say that at first memory encryption is not supported when cpu hotplugging is enabled.

But perhaps my idea of the popularity of the cpu hotplugging functionality is wrong?

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A proposed API for full-memory encryption

Posted Jan 20, 2019 22:07 UTC (Sun) by janfrode (subscriber, #244) [Link]

Switching between SMT modes on Power8/9 is probably a form of CPU hotplugging, and it’s very common to do on job setup in HPC.

A proposed API for full-memory encryption

Posted Jan 21, 2019 14:55 UTC (Mon) by naptastic (guest, #60139) [Link]

I've never physically removed a CPU from a running system, but I've used CPU hotplugging as a heavy-handed power/thermal management tool before.

A proposed API for full-memory encryption

Posted Jan 27, 2019 1:20 UTC (Sun) by flussence (guest, #85566) [Link]

It's needed for ACPI suspend.


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