Date: Mon, 04 Jun 2012 12:00:27 +0200 From: Tijl Coosemans <tijl@freebsd.org> To: Konstantin Belousov <kib@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r236456 - in head/sys: amd64/include i386/include Message-ID: <4FCC873B.90104@freebsd.org> In-Reply-To: <201206021810.q52IAGZA004238@svn.freebsd.org> References: <201206021810.q52IAGZA004238@svn.freebsd.org>
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On 02-06-2012 20:10, Konstantin Belousov wrote: > Author: kib > Date: Sat Jun 2 18:10:16 2012 > New Revision: 236456 > URL: http://svn.freebsd.org/changeset/base/236456 > > Log: > Use plain store for atomic_store_rel on x86, instead of implicitly > locked xchg instruction. IA32 memory model guarantees that store has > release semantic, since stores cannot pass loads or stores. They can pass non-temporal stores can't they?
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