Re:Zenbleed
by alecco on Tuesday July 25, 2023 @04:12AM
(#36859418)
Couldn't VMs zero all registers when switching? It shouldn't be much more latency than a typical context switch. Also purge CPU cache to be safe.
[ Parent
| on HN ]
It does zero registers when context switching, but only the "logical" registers, not the physical ones, as described in this comment: https://news.ycombinator.com/item?id=36855266