From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 1 May 2001 22:26:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 1 May 2001 22:26:48 -0400 Received: from femail2.sdc1.sfba.home.com ([24.0.95.82]:689 "EHLO femail2.sdc1.sfba.home.com") by vger.kernel.org with ESMTP id ; Tue, 1 May 2001 22:26:34 -0400 Message-ID: <3AEF7054.ADE37AF4@home.com> Date: Tue, 01 May 2001 19:26:28 -0700 From: Seth Goldberg X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.4 i686) X-Accept-Language: en MIME-Version: 1.0 To: Manfred Spraul CC: linux-kernel@vger.kernel.org Subject: Re: Followup to previous post: Atlon/VIA Instabilities In-Reply-To: <3AEF346D.FB01EAE9@colorfullife.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Manfred Spraul wrote: > > > So it seems that CONFIG_X86_USE_3DNOW is simply used to > > enable access to the routines in mmx.c (the athlon-optimized > > routines on CONFIG_K7 kernels), so then it appears that somehow > > this is corrupting memory / not behaving as it should (very > > technical, right?) :)... > > Do you use any unusual (binary only/with source) kernel modules? > > mmx.c stores the current contents on the fpu registers into > current->thread.i387.f{,x}save. > If another module modifes the fpu registers and calls memmove it will > cause fpu corruptions. > > I checked that a few months ago, and no module in the main kernel tree > does that. No, actually the instability starts right after/when the root filesystem is mounted (it seems). I have no foreign modules installed when this error occurs. Even if I did, why would the Abit KA7 with the same [other] hardware and software NOT show this problem, even with all opts enabled? --Seth