Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757095AbXI0PLY (ORCPT ); Thu, 27 Sep 2007 11:11:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754171AbXI0PLQ (ORCPT ); Thu, 27 Sep 2007 11:11:16 -0400 Received: from SOKENS03e.snapon.com ([217.33.151.228]:37607 "EHLO sokens03.snapon.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752790AbXI0PLQ (ORCPT ); Thu, 27 Sep 2007 11:11:16 -0400 X-Greylist: delayed 1543 seconds by postgrey-1.27 at vger.kernel.org; Thu, 27 Sep 2007 11:11:15 EDT Message-ID: <00ab01c80114$e659d600$7502a8c0@snaponglobal.com> From: "Marco Tralli" To: "Jordan Crouse" , Subject: kernel 2.6.23-rc6 hangs on Geode GX1 Date: Thu, 27 Sep 2007 16:44:22 +0200 Organization: SNAPON MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1807 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1896 X-OriginalArrivalTime: 27 Sep 2007 14:45:30.0157 (UTC) FILETIME=[0CD955D0:01C80115] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1668 Lines: 52 Hello all, I have random hangs on kernel boot or after few minutes on a NatSemi Geode GX1 based PC-104 (from Advantech) using kernel 2.6.23-rc6. The system locks, no way to use SysRq key, no usefull logs. No problems using kernel 2.6.21 series that I was using before with same config options. I found that commenting out "geode_configure" call in arch/i386/kernel/cpu/cyrix.c the problem is fixed. I guess recent changes to cyrix.c that replace macros setCx86/getCx86 with inlined functions have now "activate" performance tricks in geode_configure code that previously were "inactive" due to wrong macro espansion. So not only "Suspend on Halt" function is enabled but also less or not documented geode tricks (incrementor margin, fast fpu, write-back) now broken on some GX1/GXm platform (maybe because of BIOS?) I can further investigate on what exact geode_configure part cause my hangs, but I suggest to make a config options to explicity enable Geode performance tricks only if requested (maybe using CONFIG_MGEODEGX1) . Regards Marco Tralli Snap-on Equipment processor : 0 vendor_id : CyrixInstead cpu family : 5 model : 9 model name : Geode(TM) Integrated Processor by National Semi stepping : 2 cpu MHz : 299.239 cache size : 16 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu tsc msr cx8 cmov mmx cxmmx bogomips : 596.37 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/