Re: [PATCH 0/4] i386 - pte update optimizations

H. Peter Anvin
2007-04-13T01:26:31Z

Zachary Amsden wrote:
> Some PTE optimizations for native and paravirt-ops kernels; this
> provides a huge win for shadow mode hypervisors and gets rid of
> some unnecessary atomic instructions in native kernels, saving
> even more on UP by getting rid of implicit LOCK on xchg instruction.

You do know that P6 and higher don't do locked bus references as long as
the value is in the cache, right?

-hpa