From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935249AbaH1Gsc (ORCPT ); Thu, 28 Aug 2014 02:48:32 -0400 Received: from mail-wi0-f175.google.com ([209.85.212.175]:58518 "EHLO mail-wi0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932533AbaH1Gsa (ORCPT ); Thu, 28 Aug 2014 02:48:30 -0400 Date: Thu, 28 Aug 2014 08:48:25 +0200 From: Ingo Molnar To: Andrew Morton Cc: Mike Travis , mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com, msalter@redhat.com, dyoung@redhat.com, riel@redhat.com, peterz@infradead.org, mgorman@suse.de, linux-kernel@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 0/2] x86: Speed up ioremap operations Message-ID: <20140828064825.GA6059@gmail.com> References: <20140827225927.364537333@asylum.americas.sgi.com> <20140827160610.4ef142d28fd7f276efd38a51@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140827160610.4ef142d28fd7f276efd38a51@linux-foundation.org> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton wrote: > On Wed, 27 Aug 2014 17:59:27 -0500 Mike Travis wrote: > > > > > We have a large university system in the UK that is experiencing > > very long delays modprobing the driver for a specific I/O device. > > The delay is from 8-10 minutes per device and there are 31 devices > > in the system. This 4 to 5 hour delay in starting up those I/O > > devices is very much a burden on the customer. > > That's nuts. Agreed, and I'd suggest marking this for -stable, once it's all settled and tested. Thanks, Ingo