On 09/08/2022 18:00, Andrew Cooper wrote: > Xen happens to be not vulnerable to PBRSB, but it turns out we can improve the > performance on all eIBRS systems. > > Andrew Cooper (2): > x86/spec-ctrl: Enumeration for PBRSB_NO > x86/spec-ctrl: Reduce HVM RSB overhead where possible
Network perf testing on IceLake Server says this turns into a 2% guest bandwidth improvement. ~Andrew
