On Mon, 2022-02-07 at 14:45 -0800, Dave Hansen wrote: > Please add a chunk to the changelog that explains the dependency. > This > would suffice: > > To protect shadow stack state from malicious modification, > the > registers are only accessible in supervisor mode. This > implementation context-switches the registers with XSAVES. > Make > X86_FEATURE_SHSTK depend on XSAVES. Thanks. Yea, I don't think that part of the design is really elaborated on anywhere. It can be some foreshadowing for the signal stuff later too.
