From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 713F2DDE2F for ; Wed, 25 Jul 2007 17:48:32 +1000 (EST) In-Reply-To: <20070725072712.GB24093@uranus.ravnborg.org> References: <20070725072712.GB24093@uranus.ravnborg.org> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <1409C32B-61A8-49D1-BF64-1CFAA5F8B93B@kernel.crashing.org> From: Kumar Gala Subject: Re: modpost warning question Date: Wed, 25 Jul 2007 02:49:14 -0500 To: Sam Ravnborg Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org, Jeff Garzik , netdev@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Jul 25, 2007, at 2:27 AM, Sam Ravnborg wrote: > On Wed, Jul 25, 2007 at 02:14:12AM -0500, Kumar Gala wrote: >> I'm seeing the following warning: >> >> WARNING: vmlinux.o(.init.text+0x1acdc): Section mismatch: >> reference to >> .exit.text:gfar_mdio_exit (between 'gfar_init' and 'gfar_mdio_init') >> >> I don't understand why its not ok to access .exit.text >> from .init.text > > Several architectures discards .exit.text in the final linker > script (arch/$(ARCH)/kernel/vmlinux.lds.S > > So any references to .exit.text will when a module is build-in result > in a linker error because ld will flag it as an error when we > reference > a symbol in a discarded section. > > For the popular architectures (i386,x86_64) we discard .exit.text at > runtime so here we do not see the error from ld (sadly). Fair point, wondering what we do with .exit on PPC, another thing for the list :) - k