On 7/22/22 06:26, Kai Huang wrote: > Did a quick look at the spec. It appears ENCLU[EDECCSSA] should be used > together with AEX-notify. So besides advertising the new > SGX_ATTR_ASYNC_EXIT_NOTIFY bit to the KVM guest, I think we should also > advertise the ENCLU[EDECCSSA] support in guest's CPUID, like below (untested)? Sounds like a great follow-on patch! It doesn't seem truly functionally required from the spec: > EDECCSSA is a new Intel SGX user leaf function > (ENCLU[EDECCSSA]) that can facilitate AEX notification handling... If that's wrong or imprecise, I'd love to hear more about it and also about how the spec will be updated. Oh, and the one-liner patch that I was promised for enabling this is getting a _wee_ bit longer than one line.
