From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756346AbcLPR3G (ORCPT ); Fri, 16 Dec 2016 12:29:06 -0500 Received: from mail-by2nam01on0075.outbound.protection.outlook.com ([104.47.34.75]:11723 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756095AbcLPR25 (ORCPT ); Fri, 16 Dec 2016 12:28:57 -0500 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Robert.Richter@cavium.com; Date: Fri, 16 Dec 2016 18:14:06 +0100 From: Robert Richter To: Hanjun Guo CC: Ard Biesheuvel , , , , , , , , Subject: Re: [PATCH 2/2] arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA Message-ID: <20161216171406.GE4930@rric.localdomain> 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> <125f3064-bbec-d923-ad9f-b2d152ee2c2d@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; 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The problem are efi reserved regions that are no longer reserved but marked as nomap pages. Those are excluded from page initialization causing parts of a memory section not being initialized. -Robert From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f198.google.com (mail-pf0-f198.google.com [209.85.192.198]) by kanga.kvack.org (Postfix) with ESMTP id 3773C6B0260 for ; Fri, 16 Dec 2016 12:14:20 -0500 (EST) Received: by mail-pf0-f198.google.com with SMTP id c4so130394744pfb.7 for ; Fri, 16 Dec 2016 09:14:20 -0800 (PST) Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1nam02on0087.outbound.protection.outlook.com. [104.47.36.87]) by mx.google.com with ESMTPS id a3si8635075plc.19.2016.12.16.09.14.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 16 Dec 2016 09:14:18 -0800 (PST) Date: Fri, 16 Dec 2016 18:14:06 +0100 From: Robert Richter Subject: Re: [PATCH 2/2] arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA Message-ID: <20161216171406.GE4930@rric.localdomain> 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> <125f3064-bbec-d923-ad9f-b2d152ee2c2d@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <125f3064-bbec-d923-ad9f-b2d152ee2c2d@linaro.org> Sender: owner-linux-mm@kvack.org List-ID: To: Hanjun Guo Cc: Ard Biesheuvel , 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 On 16.12.16 09:57:20, Hanjun Guo wrote: > 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? The problem are efi reserved regions that are no longer reserved but marked as nomap pages. Those are excluded from page initialization causing parts of a memory section not being initialized. -Robert -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.richter@cavium.com (Robert Richter) Date: Fri, 16 Dec 2016 18:14:06 +0100 Subject: [PATCH 2/2] arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA In-Reply-To: <125f3064-bbec-d923-ad9f-b2d152ee2c2d@linaro.org> 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> <125f3064-bbec-d923-ad9f-b2d152ee2c2d@linaro.org> Message-ID: <20161216171406.GE4930@rric.localdomain> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 16.12.16 09:57:20, Hanjun Guo wrote: > 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? The problem are efi reserved regions that are no longer reserved but marked as nomap pages. Those are excluded from page initialization causing parts of a memory section not being initialized. -Robert