dcbz not used on ppc64?
cfriesen at nortelnetworks.com
Tue Jan 4 09:54:17 EST 2005
I ran into some issues with the use of the dcbz instruction in the
kernel for ppc32. I'm now looking at porting our work to ppc64, and
when I looked around a bit, I found that the dcbz instruction doesn't
appear to be used in ppc64.
This leads me to ask:
1) Is it in fact true that ppc64 does not use dcbz in the kernel?
2) If so, why not? Presumably it would be a win in some cases,
otherwise they wouldn't be using it in ppc32. Is there some other
factore in play for ppc64?
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