Re: FYI: mb(9) API is finally going away

Taylor R Campbell <[email protected]>
Newsgroups gmane.os.netbsd.ports.mips.devel,gmane.os.netbsd.devel.kernel
Message-ID <[email protected]> 
The mb(9) API is now gone, except within sys/arch/mips where it is
used inside __cpu_simple_lock -- there were too many ifdefs across
components for me to disentangle, and the logic seems to be completely
bonkers, e.g. on Octeon __cpu_simple_unlock issues a memory barrier
_after_ the store to release the lock which makes no sense.
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