From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53315) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b56Rk-0000PE-W4 for qemu-devel@nongnu.org; Tue, 24 May 2016 03:08:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b56Rh-0002Ov-Mb for qemu-devel@nongnu.org; Tue, 24 May 2016 03:08:08 -0400 Received: from mail-wm0-x235.google.com ([2a00:1450:400c:c09::235]:36769) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b56Rh-0002Or-FU for qemu-devel@nongnu.org; Tue, 24 May 2016 03:08:05 -0400 Received: by mail-wm0-x235.google.com with SMTP id n129so113198095wmn.1 for ; Tue, 24 May 2016 00:08:05 -0700 (PDT) Sender: Paolo Bonzini References: <1463863336-28760-1-git-send-email-cota@braap.org> <1463863336-28760-2-git-send-email-cota@braap.org> <20160523170912.GA16390@flamenco> From: Paolo Bonzini Message-ID: Date: Tue, 24 May 2016 09:08:01 +0200 MIME-Version: 1.0 In-Reply-To: <20160523170912.GA16390@flamenco> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] [PATCH 1/2] atomics: do not use __atomic primitives for RCU atomics List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Emilio G. Cota" , Richard Henderson Cc: MTTCG Devel , =?UTF-8?Q?Alex_Benn=c3=a9e?= , QEMU Developers , Sergey Fedorov On 23/05/2016 19:09, Emilio G. Cota wrote: > E. > > PS. And really equating smp_wmb/rmb to release/acquire as we have under > #ifdef __ATOMIC is hard to justify, other than to please tsan. That only makes a difference on arm64, right? acquire release rmb wmb x86 -- -- -- -- power lwsync lwsync lwsync lwsync armv7 dmb dmb dmb dmb arm64 dmb ishld dmb ish dmb ishld dmb ishst ia64 -- -- -- -- Thanks, Paolo