Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933993AbdIYIFz (ORCPT ); Mon, 25 Sep 2017 04:05:55 -0400 Received: from LGEAMRELO11.lge.com ([156.147.23.51]:49965 "EHLO lgeamrelo11.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933656AbdIYIFw (ORCPT ); Mon, 25 Sep 2017 04:05:52 -0400 X-Original-SENDERIP: 156.147.1.151 X-Original-MAILFROM: iamjoonsoo.kim@lge.com X-Original-SENDERIP: 10.177.222.138 X-Original-MAILFROM: iamjoonsoo.kim@lge.com Date: Mon, 25 Sep 2017 17:08:06 +0900 From: Joonsoo Kim To: Tony Lindgren Cc: Pavel Machek , pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com, "Aneesh Kumar K.V" , Vlastimil Babka , Andrew Morton , Stephen Rothwell , Russell King Subject: Re: n900 in next-20170901 Message-ID: <20170925080806.GA9837@js1304-P5Q-DELUXE> References: <20170903203737.GA12475@amd> <20170905201314.GE5024@atomide.com> <20170905233241.GA19231@js1304-P5Q-DELUXE> <20170906133057.GH5024@atomide.com> <20170907073038.GA2111@js1304-P5Q-DELUXE> <20170907161650.GP5024@atomide.com> <20170913075516.GA25036@js1304-P5Q-DELUXE> <20170913163126.GS5024@atomide.com> <20170915065608.GA8567@js1304-P5Q-DELUXE> <20170921172811.GB4394@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170921172811.GB4394@atomide.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1844 Lines: 47 On Thu, Sep 21, 2017 at 10:28:11AM -0700, Tony Lindgren wrote: > * Joonsoo Kim [170914 23:55]: > > On Wed, Sep 13, 2017 at 09:31:27AM -0700, Tony Lindgren wrote: > > > Yes I disabled CONFIG_HIGHMEM and n900 boots. To disable it, > > > you need to remove it from arch/arm/mach-omap2/Kconfig that > > > selects it if ARCH_OMAP2PLUS_TYPICAL is selected. > > > > Okay. Problem would be related to address traslation. I'd like to > > check address traslation more. Could you apply following patch and > > test it? And, please send me the dmesg log and your kernel config. > > Please test this with CONFIG_DEBUG_VIRTUAL = n and CONFIG_CMA_DEBUG=y and > > CONFIG_HIGHMEM=y and with kernel bootparam 'ignore_loglevel'. > > > > It would be really appreciate if you send me two logs for before/after > > commit 9caf25f996e8. > > Sorry for the delays, I finally got around testing this for you. No problem! I really appreciate your help! > Compile with your patch failed for modules with __virt_to_phys_debug > being undefined so I added EXPORT_SYMBOL there. I also enabled DEBUG_LL > and EARLYPRINTK to get output. > > Below is dmesg output for 9caf25f996e8 + your patch. I'll send you > the full logs separately. Hmm...there is only one caller for the CMA memory, that is, atomic_pool_init(). Could you test one more time with 9caf25f996e8 + following patch? I'd like to know the actual user for the CMA memory. Thanks. -------------------------->8------------------------ diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 519c294..c68f34a 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -587,6 +587,8 @@ static void *__alloc_from_pool(size_t size, struct page **ret_page) ptr = (void *)val; } + dump_stack(); + return ptr; }