svn commit: r274739 - head/sys/mips/conf

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Nov 25 06:40:52 UTC 2014


--------
In message <4C2BD093-BEA2-47F9-B575-90342712E9B2 at bsdimp.com>, Warner Losh writes:

>What's the minimum specs required for get_cyclecount()?

In randomness context:  That there exists a complex and unpredictable
cache-hierarchy which makes the exact number of cycles for any one
instruction pseudo-random.

Apart from x86 and zSeries no currently relevant architecture has that.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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Never attribute to malice what can adequately be explained by incompetence.


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