From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758941AbcLPB5f (ORCPT ); Thu, 15 Dec 2016 20:57:35 -0500 Received: from mail-pf0-f179.google.com ([209.85.192.179]:33251 "EHLO mail-pf0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758919AbcLPB50 (ORCPT ); Thu, 15 Dec 2016 20:57:26 -0500 Subject: Re: [PATCH 2/2] arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA To: Robert Richter , Ard Biesheuvel References: <1481706707-6211-1-git-send-email-ard.biesheuvel@linaro.org> <1481706707-6211-3-git-send-email-ard.biesheuvel@linaro.org> <20161215153930.GA8111@rric.localdomain> Cc: linux-arm-kernel@lists.infradead.org, will.deacon@arm.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, catalin.marinas@arm.com, akpm@linux-foundation.org, xieyisheng1@huawei.com, james.morse@arm.com From: Hanjun Guo Message-ID: <125f3064-bbec-d923-ad9f-b2d152ee2c2d@linaro.org> Date: Fri, 16 Dec 2016 09:57:20 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <20161215153930.GA8111@rric.localdomain> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Robert, On 2016/12/15 23:39, Robert Richter wrote: > I was going to do some measurements but my kernel crashes now with a > page fault in efi_rtc_probe(): > > [ 21.663393] Unable to handle kernel paging request at virtual address 20251000 > [ 21.663396] pgd = ffff000009090000 > [ 21.663401] [20251000] *pgd=0000010ffff90003 > [ 21.663402] , *pud=0000010ffff90003 > [ 21.663404] , *pmd=0000000fdc030003 > [ 21.663405] , *pte=00e8832000250707 > > The sparsemem config requires the whole section to be initialized. > Your patches do not address this. This patch set is running properly on D05, both the boot and LTP MM stress test are ok, seems it's a different configuration of memory mappings in firmware, just a stupid question, which part is related to this problem, is it only the Reserved memory? Thanks Hanjun