February 17, 2025 at 12:20 PM, "Borislav Petkov" <bp@xxxxxxxxx> wrote: > > On Mon, Feb 17, 2025 at 11:56:22AM -0800, Yosry Ahmed wrote: > > > > > I meant IBPB + MSR clear before going to userspace, or IBPB + MSR clear > > before a context switch. > > > > Basically what I said already: > > "Yes, let's keep it simple and do anything more involved *only* if it is > really necessary." Right, I agree as I mentioned earlier (assuming the perf hit is 1-2%), just wanted to clarify what I meant.