From nobody Thu Oct 07 03:28:12 2021 X-Original-To: dev-commits-src-branches@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 3BEA812DE062; Thu, 7 Oct 2021 03:28:14 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HPxbx28TFz4qw0; Thu, 7 Oct 2021 03:28:13 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D20F04881; Thu, 7 Oct 2021 03:28:12 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1973SCaL060809; Thu, 7 Oct 2021 03:28:12 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1973SCj8060808; Thu, 7 Oct 2021 03:28:12 GMT (envelope-from git) Date: Thu, 7 Oct 2021 03:28:12 GMT Message-Id: <202110070328.1973SCj8060808@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Kyle Evans Subject: git: ec7b80ade997 - stable/12 - powerpc/atomic: Fix atomic_cmpset_rel() List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kevans X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: ec7b80ade997c5011bc1f1ccd5a74384b70239f2 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/12 has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=ec7b80ade997c5011bc1f1ccd5a74384b70239f2 commit ec7b80ade997c5011bc1f1ccd5a74384b70239f2 Author: Justin Hibbits AuthorDate: 2019-10-15 03:37:21 +0000 Commit: Kyle Evans CommitDate: 2021-10-07 03:27:26 +0000 powerpc/atomic: Fix atomic_cmpset_rel() Need a release barrier, not an acquire barrier, else bad things happen. (cherry picked from commit 9551397f51a7041dd0060bae1433d0e802373e35) --- sys/powerpc/include/atomic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/powerpc/include/atomic.h b/sys/powerpc/include/atomic.h index c72639811e39..788e7520d7bc 100644 --- a/sys/powerpc/include/atomic.h +++ b/sys/powerpc/include/atomic.h @@ -686,7 +686,7 @@ atomic_cmpset_long(volatile u_long* p, u_long cmpval, u_long newval) atomic_cmpset_rel_##type(volatile u_##type *p, \ u_##type cmpval, u_##type newval)\ {\ - __ATOMIC_ACQ();\ + __ATOMIC_REL();\ return (atomic_cmpset_##type(p, cmpval, newval));\ }\ struct hack