On Fri, Jul 22, 2022, Dave Hansen wrote: > 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... Yeah, it's enumerated separately. > 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. Heh, fool me once...
