2015-03-09 20:28-0300, Marcelo Tosatti: > On Fri, Feb 27, 2015 at 06:19:18PM -0600, Joel Schopp wrote: > > From: David Kaplan <[email protected]> > > No need to re-decode WBINVD since we know what it is from the intercept. > > > > Signed-off-by: David Kaplan <[email protected]> > > [extracted from larger unlrelated patch, forward ported, tested] > > Signed-off-by: Joel Schopp <[email protected]> > > Can't you disable the intercept if need_emulate_wbinvd(vcpu) == false?
I don't think we want to: it should be faster to intercept and ignore than to invalidate all caches. The exit doesn't affect other physical cores and costs just about 10(?) L3 cache misses. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
