On Wed, 03 Oct 2012 11:32:45 +0200 Dag-Erling Smørgrav wrote: > RW <rwmailli...@googlemail.com> writes: > > It doesn't compute it in a weird way for amd64 and most i386 > > systems. Where possible, get_cyclecount is just a wrapper for > > rdtsc, which I think it will be for all the systems you quoted > > (with the possible exception of virtualbox). > > No. All the machines I tested it on had TSCs, but not all i386 > machines we support do, so get_cyclecount() is always a function call > on i386. Look at the code, or heck, disassemble my kernel if you > don't believe me.
It appears that it changed in April (Revision 220347), so if they were all running 9.1, 9-stable or head then you're quite right. I was looking at my local source where it's still conditional on "tsc_present". _______________________________________________ freebsd-security@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "freebsd-security-unsubscr...@freebsd.org"
