From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 12 Jan 2001 16:31:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 12 Jan 2001 16:31:00 -0500 Received: from femail1.rdc1.on.home.com ([24.2.9.88]:59027 "EHLO femail1.rdc1.on.home.com") by vger.kernel.org with ESMTP id ; Fri, 12 Jan 2001 16:30:48 -0500 Message-ID: <3A5F7766.F90F384F@Home.net> Date: Fri, 12 Jan 2001 16:30:14 -0500 From: Shawn Starr Organization: Visualnet X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.0 i586) X-Accept-Language: en MIME-Version: 1.0 To: Matti Aarnio CC: linux-kernel@vger.kernel.org Subject: Re: [CONT PROBLEM] 2.4.1-pre3 - Undefined symbol `__buggy_fxsr_alignment' In-Reply-To: <3A5E4B1D.5EF1B0EB@Home.net> <3A5E7DB2.A7126A68@Home.net> <3A5E7EC4.39CC7298@Home.net> <3A5F62C6.FF3EE6B1@Home.net> <20010112232044.L25659@mea-ext.zmailer.org> Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Well, when i Make bzImage it uses -O2 for optimization. Is there any fix? change the optimization to -O0 ? Matti Aarnio wrote: > On Fri, Jan 12, 2001 at 03:02:15PM -0500, Shawn Starr wrote: > > Nope, its not ;/ > > > > Im on a Intel Pentium 200Mhz PC, 64MB RAM, > > > > init/main.o: In function `check_fpu': > > init/main.o(.text.init+0x53): undefined reference to `__buggy_fxsr_alignment' > > make: *** [vmlinux] Error 1 > > > > same fatal error. Where is this function defined in the i386 asm header? > > It should not be present at all in the objects. > The compiler optimizer should remove that call, > which is just an example of similar kind of "if > optimizer fails, here is cannon-fodder to alert > users about it." > > > If so, I could fix this and submit a patch. > > > /* Enable FXSR and company _before_ testing for FP problems. */ > > /* > > * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned. > > */ > > if (offsetof(struct task_struct, thread.i387.fxsave) & 15) { > > extern void __buggy_fxsr_alignment(void); > > __buggy_fxsr_alignment(); > > > > Where is this function? Where is it defined? When i grep the whole dir > > i dont see this function anywhere? > > See the comment above the offsetof() call. > Now think. Figure out why things are at wrong offset. > Has something been added into task_struct lately ? > Or to thread_struct, which actually is processor context > data where this 'thread.i386.fxsave' thing resides ? > > Oh yes, if compilation DOES NOT happen with -O flag, > this will also happen.. > > > Shawn. > > /Matti Aarnio > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/