On Thu, 27 Jun 2019, Ricardo Neri wrote:
> By measuring the execution time of mtrr_aps_init() (from which MTRRs
> in all CPUs are programmed in lock-step at boot), I find savings in the
> time required to program MTRRs as follows:
>
> Platform time-with-wbinvd(ms) time-no-wbin
Programming MTRR registers in multi-processor systems is a rather lengthy
process. Furthermore, all processors must program these registers in lock
step and with interrupts disabled; the process also involves flushing
caches and TLBs twice. As a result, the process may take a considerable
amount of
2 matches
Mail list logo
