From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: Re: Do any Alpha systems include InfiniBand? Date: Mon, 23 Oct 2017 11:01:36 -0700 Message-ID: <20171023180136.GR3659@linux.vnet.ibm.com> References: <20171020194832.GA19016@linux.vnet.ibm.com> <20171023085921.jwbntptn6ictbnvj@tower> <20171023171312.GL3659@linux.vnet.ibm.com> <20171023171625.GF6222@arm.com> Reply-To: paulmck@linux.vnet.ibm.com Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <20171023171625.GF6222@arm.com> Sender: linux-alpha-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Will Deacon Cc: Michael Cree , parri.andrea@gmail.com, linux-alpha@vger.kernel.org, peterz@infradead.org, rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com, mark.rutland@arm.com On Mon, Oct 23, 2017 at 06:16:25PM +0100, Will Deacon wrote: > On Mon, Oct 23, 2017 at 10:13:12AM -0700, Paul E. McKenney wrote: > > On Mon, Oct 23, 2017 at 09:59:21PM +1300, Michael Cree wrote: > > > On Fri, Oct 20, 2017 at 12:48:32PM -0700, Paul E. McKenney wrote: > > > > Do any of the DEC Alpha systems that run recent kernels have InfiniBand? > > > > Given my understanding of the history, I believe the answer to be "no". > > > > > > I am not aware of any Alpha systems with InfiniBand. > > > > Very good, then we need not worry about any Alpha-related consequences > > of removing smp_read_barrier_depends() invocations from the InfiniBand > > driver. ;-) > > But maybe make that driver depend on !CONFIG_ALPHA, so as to avoid planting > any subtle ordering bugs? Good point, that does sound like a very sensible precaution! Thanx, Paul