spinlocks

[David Boutcher]

owner-linuxppc64-dev at lists.linuxppc.org wrote on 01/05/2004 11:43:08 AM:

> I think we additionally need to seperate out HMT_LOW and HMT_MEDIUM.  It
> just happens that almost all of the current pSeries (and the G5 from
> Apple) don't support HMT, so it is a bit wasteful to call it.

Could, though the HMT_* instructions just map to "or 0,0,0", "or 1,1,1",
etc, which are otherwise no-ops.  The processor should do those in one
cycle, or even less.

Dave Boutcher
IBM Linux Technology Center


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