On Thu, Feb 04, 2021, Jarkko Sakkinen wrote: > On Wed, Feb 03, 2021 at 01:49:06PM +1300, Kai Huang wrote: > > What working *incorrectly* thing is related to SGX virtualization? The things > > SGX virtualization requires (basically just raw EPC allocation) are all in > > sgx/main.c. > > States: > > A. SGX driver is unsupported. > B. SGX driver is supported and initialized correctly. > C. SGX driver is supported and failed to initialize. > > I just thought that KVM should support SGX when we are either in states A > or B. Even the short summary implies this. It is expected that SGX driver > initializes correctly if it is supported in the first place. If it doesn't, > something is probaly seriously wrong. That is something we don't expect in > a legit system behavior. It's legit behavior, and something we (you?) explicitly want to support. See patch 05, x86/cpu/intel: Allow SGX virtualization without Launch Control support.