Hi Paul, On Tue, 5 Feb 2019 23:35:31 +0000 Paul Burton <paul.burton@xxxxxxxx> wrote: > > cmpxchg() doesn't need the added loongson_llsc_mb() barrier that > set_pte() has in mips-fixes because for the affected Loongson 3 > configurations the smp_mb__before_llsc() that cmpxchg() already contains > is equivalent (both will emit a "sync 0" instruction). OK, good to know, thanks. -- Cheers, Stephen Rothwell
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