On 10/12/19 04:53, Huang, Kai wrote: > Right. Alghouth both MKTME and SME/SEV reduce physical bits, but they treat > those reduced bits differently: MKTME treats those as keyID thus they can be > set, but SME/SEV treats those as reserved bits so you cannot set any of them. > > Maybe the naming of shadow_phys_bits is a little bit confusing here. The purpose > of it was to determine first reserved bits, but not actual physical address bits > . Therefore for MKTME it should include the keyID bits, but for SME/SEV it > should not. Not just the first reserved bit, but _some_ reserved bit such that all consecutive bits up to bit 51 are reserved. Paolo
