Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756679Ab3JNNta (ORCPT ); Mon, 14 Oct 2013 09:49:30 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:47658 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750811Ab3JNNt3 (ORCPT ); Mon, 14 Oct 2013 09:49:29 -0400 Message-ID: <525BF641.3000300@ti.com> Date: Mon, 14 Oct 2013 09:48:49 -0400 From: Santosh Shilimkar User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Tejun Heo CC: Russell King - ARM Linux , , , , Andrew Morton , , Subject: Re: [RFC 06/23] mm/memblock: Add memblock early memory allocation apis References: <1381615146-20342-1-git-send-email-santosh.shilimkar@ti.com> <1381615146-20342-7-git-send-email-santosh.shilimkar@ti.com> <20131013175648.GC5253@mtj.dyndns.org> <20131013180058.GG25034@n2100.arm.linux.org.uk> <20131013184212.GA18075@htj.dyndns.org> In-Reply-To: <20131013184212.GA18075@htj.dyndns.org> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1618 Lines: 38 On Sunday 13 October 2013 02:42 PM, Tejun Heo wrote: > On Sun, Oct 13, 2013 at 07:00:59PM +0100, Russell King - ARM Linux wrote: >> On Sun, Oct 13, 2013 at 01:56:48PM -0400, Tejun Heo wrote: >>> Hello, >>> >>> On Sat, Oct 12, 2013 at 05:58:49PM -0400, Santosh Shilimkar wrote: >>>> Introduce memblock early memory allocation APIs which allow to support >>>> LPAE extension on 32 bits archs. More over, this is the next step >>> >>> LPAE isn't something people outside arm circle would understand. >>> Let's stick to highmem. >> >> LPAE != highmem. Two totally different things, unless you believe >> system memory always starts at physical address zero, which is very >> far from the case on the majority of ARM platforms. >> thanks Russell for clarification. >> So replacing LPAE with "highmem" is pure misrepresentation and is >> inaccurate. PAE might be a better term, and is also the x86 term >> for this. > > Ah, right, forgot about the base address. Let's please spell out the > requirements then. Briefly explaining both aspects (non-zero base > addr & highmem) and why the existing bootmem based interfaced can't > serve them would be helpful to later readers. > OK. Will try to describe bit more in the next version.Cover letter had some of the information on the requirement which I will also mention in the patch commit in next version. Regards, Santosh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/