From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f171.google.com (mail-pd0-f171.google.com [209.85.192.171]) by kanga.kvack.org (Postfix) with ESMTP id DD8196B0035 for ; Mon, 15 Sep 2014 05:59:35 -0400 (EDT) Received: by mail-pd0-f171.google.com with SMTP id p10so5973355pdj.2 for ; Mon, 15 Sep 2014 02:59:35 -0700 (PDT) Received: from cnbjrel02.sonyericsson.com (cnbjrel02.sonyericsson.com. [219.141.167.166]) by mx.google.com with ESMTPS id zz2si21904147pbc.124.2014.09.15.02.59.33 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 15 Sep 2014 02:59:34 -0700 (PDT) From: "Wang, Yalin" Date: Mon, 15 Sep 2014 17:59:27 +0800 Subject: RE: [RFC] arm:extend the reserved mrmory for initrd to be page aligned Message-ID: <35FD53F367049845BC99AC72306C23D103D6DB491605@CNBJMBX05.corpusers.net> References: <35FD53F367049845BC99AC72306C23D103D6DB4915FC@CNBJMBX05.corpusers.net> <20140915084616.GX12361@n2100.arm.linux.org.uk> <35FD53F367049845BC99AC72306C23D103D6DB491604@CNBJMBX05.corpusers.net> <20140915093014.GZ12361@n2100.arm.linux.org.uk> In-Reply-To: <20140915093014.GZ12361@n2100.arm.linux.org.uk> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: 'Russell King - ARM Linux' Cc: 'Will Deacon' , "'linux-kernel@vger.kernel.org'" , "'linux-arm-kernel@lists.infradead.org'" , "'linux-mm@kvack.org'" , "linux-arm-msm@vger.kernel.org" Hi Add more log: <4>[ 0.000000] INITRD unalign phys address:0x02000000+0x0022fb0e <4>[ 0.000000] INITRD aligned phys address:0x02000000+0x00230000 <4>[ 0.574868] free_initrd: free initrd 0xc2000000+0xc222fb0e <4>[ 0.579398] free_initrd_mem: free pfn:8192---8752 The inird used memory is still the same as the one passed by bootloads, I don't change it. It should be safe. -----Original Message----- From: Russell King - ARM Linux [mailto:linux@arm.linux.org.uk]=20 Sent: Monday, September 15, 2014 5:30 PM To: Wang, Yalin Cc: 'Will Deacon'; 'linux-kernel@vger.kernel.org'; 'linux-arm-kernel@lists.= infradead.org'; 'linux-mm@kvack.org'; linux-arm-msm@vger.kernel.org Subject: Re: [RFC] arm:extend the reserved mrmory for initrd to be page ali= gned On Mon, Sep 15, 2014 at 05:07:53PM +0800, Wang, Yalin wrote: > Hi >=20 > I tested it on my phone, > >From log: > <4>[ 0.000000] INITRD unalign phys address:0x02000000+0x0022fb0e > <4>[ 0.000000] INITRD aligned phys address:0x02000000+0x00230000 >=20 > <4>[ 0.579474] free_initrd_mem: free pfn:8192---8752 >=20 > The tail address is not aligned for most initrd image, This page will=20 > not be freed and lost . Right, so from this I can assume that you only tested it by seeing what the= addresses were, and the values used in free_initrd_mem(). What you haven't tested is whether the initrd actually gets used with your = changes, which is more what I was interested in given what I found when rea= ding your patch. -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up accor= ding to speedtest.net. -- 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