From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 13 Nov 2013 14:39:52 +0100 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= To: Jonathan Austin Cc: Ming Lei , "stable@vger.kernel.org" , Rusty Russell , Russell King , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH 1/2] ARM: default PHYS_OFFSET if !MMU Message-ID: <20131113133952.GW14892@pengutronix.de> References: <1384341351-4110-1-git-send-email-tom.leiming@gmail.com> <1384341351-4110-2-git-send-email-tom.leiming@gmail.com> <528366A9.7060504@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <528366A9.7060504@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: On Wed, Nov 13, 2013 at 11:46:49AM +0000, Jonathan Austin wrote: > Hi Ming, > > On 13/11/13 11:15, Ming Lei wrote: > > From: Jonathan Austin > > > > Set CONFIG_PAGE_OFFSET as PHYS_OFFSET when !MMU so that > > we can keep CONFIG_PAGE_OFFSET same with PAGE_OFFSET. > > > > I'm not so sure about this commit message - I don't think > it makes sense...Should it not be more like: > > ------->8------- > Subject: ARM: set PAGE_OFFSET = PHYS_OFFSET if !MMU > > With !MMU we still set PAGE_OFFSET to 0xC0000000, which > makes little sense and causes a regression on !MMU after > f6537f2f0eba4eba ("scripts/kallsyms: filter symbols not > kernel address space") > > This patch sets PAGE_OFFSET to PHYS_OFFSET in the !MMU > case, fixing the regression (Tested on Cortex-R7/Vexpress) > --------8<--------- I like this commit log better, too. As CONFIG_PAGE_OFFSET is only used in scripts/kallsyms.c and scripts/link-vmlinux.sh for !MMU. Booting on efm32 with this patch works just fine, so if you want add my Tested-by. But I'm unsure how valuable it is as I don't see a breakage without it. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-K�nig | Industrial Linux Solutions | http://www.pengutronix.de/ |