On April 14, 2025 10:48:47 AM PDT, Xin Li <xin@xxxxxxxxx> wrote: >On 4/12/2025 4:10 PM, H. Peter Anvin wrote: >> Also,*in this specific case* IA32_SPEC_CTRL is architecturally nonserializing, i.e. WRMSR executes as WRMSRNS anyway. > >While the immediate form WRMSRNS could be faster because the MSR index >is available *much* earlier in the pipeline, right? Yes, but then it would be redundant with the virtualization support.
