From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753946AbaIOKWR (ORCPT ); Mon, 15 Sep 2014 06:22:17 -0400 Received: from cnbjrel01.sonyericsson.com ([219.141.167.165]:14908 "EHLO cnbjrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753744AbaIOKWP convert rfc822-to-8bit (ORCPT ); Mon, 15 Sep 2014 06:22:15 -0400 From: "Wang, Yalin" 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" Date: Mon, 15 Sep 2014 18:22:12 +0800 Subject: RE: [RFC] arm:extend the reserved mrmory for initrd to be page aligned Thread-Topic: [RFC] arm:extend the reserved mrmory for initrd to be page aligned Thread-Index: Ac/Qzld/N/h/WtyqSn+5PFwbsZtaAQAAFFaQ Message-ID: <35FD53F367049845BC99AC72306C23D103D6DB491606@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> <35FD53F367049845BC99AC72306C23D103D6DB491605@CNBJMBX05.corpusers.net> <20140915101632.GA12361@n2100.arm.linux.org.uk> In-Reply-To: <20140915101632.GA12361@n2100.arm.linux.org.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Oh, I see your meaning, Yeah , my initrd is a cpio image, And it can still work after apply this patch. -----Original Message----- From: Russell King - ARM Linux [mailto:linux@arm.linux.org.uk] Sent: Monday, September 15, 2014 6:17 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 aligned On Mon, Sep 15, 2014 at 05:59:27PM +0800, Wang, Yalin wrote: > 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. This tells me nothing about whether the initrd is actually /used/. What it tells me is that it's being freed. The function of an initrd is not to be a chunk of memory which gets freed later on in the boot process. It is there to provide an "initial ramdisk" (whether it be a filesystem image, or a CPIO compressed archive) for userspace to run. So, have you checked that initrd is still functional after this patch? -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net.