Re: linux-next: manual merge of the mips tree with the mips-fixes tree
From: Stephen Rothwell
Date: Tue Feb 05 2019 - 18:45:04 EST
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
Attachment:
pgpJcIA2LsJAa.pgp
Description: OpenPGP digital signature