Bringing Call Gates Back
http://www.alex-ionescu.com/?p=340 [www.alex-ionescu.com]
2017-08-12 03:56
This led me to further analyze how UMS (User Mode Scheduling) worked before this processor feature was added – something which I knew a little bit about, but not enough to write on.
What I discovered completely changed my understanding of 64-bit Long Mode semantics and challenged many assumptions I was making.
source: solar