From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: [RFC] Initial attempt to make ARM use LMB Date: Wed, 14 Apr 2010 17:34:22 +1000 Message-ID: <1271230462.13059.142.camel@pasglop> References: <20100325233248.GM24984@n2100.arm.linux.org.uk> <20100408153111.GA2598@debian> <20100408182715.GF31407@n2100.arm.linux.org.uk> <20100409111105.GA2804@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from gate.crashing.org ([63.228.1.57]:32777 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752886Ab0DNHgq (ORCPT ); Wed, 14 Apr 2010 03:36:46 -0400 In-Reply-To: <20100409111105.GA2804@n2100.arm.linux.org.uk> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Russell King - ARM Linux Cc: Rabin Vincent , Tony Lindgren , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org On Fri, 2010-04-09 at 12:11 +0100, Russell King - ARM Linux wrote: > On Thu, Apr 08, 2010 at 07:27:15PM +0100, Russell King - ARM Linux wrote: > > On Thu, Apr 08, 2010 at 09:02:56PM +0530, Rabin Vincent wrote: > > > On Thu, Mar 25, 2010 at 11:32:48PM +0000, Russell King - ARM Linux wrote: > > > > The patch below is the combined patch; individual patches can be found > > > > in the arm:lmb patches on the website or the lmb branch of my git tree; > > > > this should be considered unstable. > > > > > > Something like the following is needed to make initrds work after this > > > patch: > > > > This to me looks like a very large patch for what is a small problem - > > that is the assignment of initrd_start/initrd_size got lost along the > > way. > > > > I'd much rather have the smaller patch; keep the initrd parameters in > > the physical address space for as long as possible, and only convert > > them to the virtual address space once we've finished mm initialisation. > > Here's a revised version which should resolve the initrd problem. BTW. I'm doing some cleanup of lmb, you can take a peek at my WIP in git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc.git branch "lmb". It shouldn't break your stuff, though you will probably need to add a call to lmb_set_current_limit() in the right place instead of setting LMB_REAL_LIMIT to lowmem_end_addr. Anyway, it's still WIP, but feel free to comment, and if there's something else you want me to do, cleanup or change in the core LMB, let me know. Cheers, Ben.