From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754077AbaCLMRx (ORCPT ); Wed, 12 Mar 2014 08:17:53 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:56065 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753994AbaCLMRv (ORCPT ); Wed, 12 Mar 2014 08:17:51 -0400 Message-ID: <53205CA1.1090502@ti.com> Date: Wed, 12 Mar 2014 15:09:53 +0200 From: Grygorii Strashko User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Russell King - ARM Linux , Laura Abbott CC: David Brown , Daniel Walker , Jason Cooper , Andrew Lunn , Sebastian Hesselbarth , Eric Miao , Haojian Zhuang , Ben Dooks , Kukjin Kim , , , , Leif Lindholm , Catalin Marinas , Rob Herring , Ard Biesheuvel , Will Deacon , Nicolas Pitre , Santosh Shilimkar , , Andrew Morton , Courtney Cavin , Marek Szyprowski , Grant Likely Subject: Re: [PATCHv4 2/2] arm: Get rid of meminfo References: <1392761733-32628-1-git-send-email-lauraa@codeaurora.org> <1392761733-32628-3-git-send-email-lauraa@codeaurora.org> <20140312085401.GB21483@n2100.arm.linux.org.uk> In-Reply-To: <20140312085401.GB21483@n2100.arm.linux.org.uk> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Russell, On 03/12/2014 10:54 AM, Russell King - ARM Linux wrote: > On Tue, Feb 18, 2014 at 02:15:33PM -0800, Laura Abbott wrote: >> memblock is now fully integrated into the kernel and is the prefered >> method for tracking memory. Rather than reinvent the wheel with >> meminfo, migrate to using memblock directly instead of meminfo as >> an intermediate. >> >> Acked-by: Jason Cooper >> Acked-by: Catalin Marinas >> Acked-by: Santosh Shilimkar >> Acked-by: Kukjin Kim >> Tested-by: Marek Szyprowski >> Tested-by: Leif Lindholm >> Signed-off-by: Laura Abbott > > Laura, > > This patch causes a bunch of platforms to no longer boot - imx6solo with > 1GB of RAM boots, imx6q with 2GB of RAM doesn't. Versatile Express doesn't. > > The early printk messages don't reveal anything too interesting: > > Booting Linux on physical CPU 0x0 > Linux version 3.14.0-rc6+ (rmk@rmk-PC.arm.linux.org.uk) (gcc version 4.6.4 (GCC) ) #630 SMP Wed Mar 12 01:13:36 GMT 2014 > CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d > CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache > Machine model: SolidRun Cubox-i Dual/Quad > cma: CMA: reserved 64 MiB at 8c000000 > Memory policy: Data cache writealloc > > > vs. > > Booting Linux on physical CPU 0x0 > Linux version 3.14.0-rc6+ (rmk@rmk-PC.arm.linux.org.uk) (gcc version 4.6.4 (GCC) ) #631 SMP Wed Mar 12 01:15:37 GMT 2014 > CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d > CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache > Machine model: SolidRun Cubox-i Dual/Quad > cma: CMA: reserved 64 MiB at 3b800000 > Memory policy: Data cache writealloc > On node 0 totalpages: 524288 > free_area_init_node: node 0, pgdat c09d0240, node_mem_map ea7d8000 > Normal zone: 1520 pages used for memmap > Normal zone: 0 pages reserved > Normal zone: 194560 pages, LIFO batch:31 > HighMem zone: 2576 pages used for memmap > HighMem zone: 329728 pages, LIFO batch:31 > ... > > The only obvious difference is the address of that CMA reservation, > CMA shouldn't make a difference here - but I suspect that other > allocations which need to be in lowmem probably aren't. > Could it be possible to enable memblock debug by adding "memblock=debug" in cmdline? Regards, -grygorii