Wanpeng Li <kernellwp@xxxxxxxxx> wrote: >On Fri, 6 Mar 2020 at 10:23, linmiaohe <linmiaohe@xxxxxxxxxx> wrote: >> >> hpa@xxxxxxxxx wrote: >> >>On March 5, 2020 6:05:40 PM PST, linmiaohe <linmiaohe@xxxxxxxxxx> wrote: >> >>Hi, >> >>Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: >> >>Many thanks for suggestion. What do you mean is like this ? >> >> >> >> index = (msr - 0x200) >> 1; >> >> is_mtrr_mask = msr & 1; >> >> >> >>Thanks again. >> > >> >You realize that the compiler will probably produce exactly the same code, right? As such, it is about making the code easy for the human reader. >> > >> >Even if it didn't, this code is as far from performance critical as one can possibly get. >> >> Yep, it looks gain little. Thanks. > >Please post the performance number when you mention optimize XXX later. > Sure, I would take care of this. Thanks for your reminder!
