From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34595) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brZo9-0008KH-Ok for qemu-devel@nongnu.org; Tue, 04 Oct 2016 20:11:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1brZo6-0000re-IH for qemu-devel@nongnu.org; Tue, 04 Oct 2016 20:11:37 -0400 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:60464) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brZo5-0000oS-8s for qemu-devel@nongnu.org; Tue, 04 Oct 2016 20:11:34 -0400 Date: Tue, 4 Oct 2016 20:11:24 -0400 From: "Emilio G. Cota" Message-ID: <20161005001124.GC1744@flamenco> References: <1474048017-26696-1-git-send-email-rth@twiddle.net> <1474048017-26696-36-git-send-email-rth@twiddle.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1474048017-26696-36-git-send-email-rth@twiddle.net> Subject: Re: [Qemu-devel] [PATCH v4 35/35] target-alpha: Emulate LL/SC using cmpxchg helpers List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Richard Henderson Cc: qemu-devel@nongnu.org On Fri, Sep 16, 2016 at 10:46:57 -0700, Richard Henderson wrote: > Emulating LL/SC with cmpxchg is not correct, since it can > suffer from the ABA problem. However, portable parallel > code is writting assuming only cmpxchg which means that in > practice this is a viable alternative. s/writting/written/ E.