From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f175.google.com (mail-pd0-f175.google.com [209.85.192.175]) by kanga.kvack.org (Postfix) with ESMTP id DC8B66B0031 for ; Mon, 14 Oct 2013 09:49:06 -0400 (EDT) Received: by mail-pd0-f175.google.com with SMTP id q10so7347875pdj.20 for ; Mon, 14 Oct 2013 06:49:06 -0700 (PDT) Message-ID: <525BF641.3000300@ti.com> Date: Mon, 14 Oct 2013 09:48:49 -0400 From: Santosh Shilimkar MIME-Version: 1.0 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: owner-linux-mm@kvack.org List-ID: To: Tejun Heo Cc: Russell King - ARM Linux , grygorii.strashko@ti.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , yinghai@kernel.org, linux-arm-kernel@lists.infradead.org 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org