On 26/04/20 17:23, Yang Weijiang wrote: > What's the purpose of the selftest? Is it just for Shadow Stack SSP > state transitions in various cases? e.g., L0 SSP<--->L3 SSP, > L0 SSP1<--->L0 SSP2? No, it checks that the whole state can be extracted and restored from a running VM. For example, it would have caught immediately that the current SSP could not be saved and restored. > We now have the KVM unit-test for CET functionalities, > i.e., Shadow Stack and Indirect Branch Tracking for user-mode, I can put the > state test app into the todo list as current patchset is mainly for user-mode > protection, the supervisor-mode CET protection is the next step. What are the limitations? Or are you referring to the unit test? Paolo
