From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Buesch Subject: Re: [Bugme-new] [Bug 10473] New: Infinite loop "b44: eth0: powering down PHY" Date: Tue, 22 Apr 2008 15:34:53 +0200 Message-ID: <200804221534.53825.mb@bu3sch.de> References: <200804212021.06367.mb@bu3sch.de> <9bfa9ae0804212001k5fd81642yba38386c92c8847e@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Cc: "Andrew Morton" , netdev@vger.kernel.org, bugme-daemon@bugzilla.kernel.org, "Gary Zambrano" To: "Nelson A. de Oliveira" Return-path: Received: from vs166246.vserver.de ([62.75.166.246]:35523 "EHLO vs166246.vserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752321AbYDVNf3 (ORCPT ); Tue, 22 Apr 2008 09:35:29 -0400 In-Reply-To: <9bfa9ae0804212001k5fd81642yba38386c92c8847e@mail.gmail.com> Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: On Tuesday 22 April 2008 05:01:54 Nelson A. de Oliveira wrote: > Hi! > > Maybe this can help: > Using a new .config, I started to enable/disable options and test. > What I found is that if I enable "3G/1G user/kernel split", the kernel > works (it boots normally, the network interface works, etc). If I > select "3G/1G user/kernel split (for full 1G low memory)" I get the > infinite loop of "b44: eth0: powering down PHY". Ah, so this bug isn't actually caused by a patch but rather by a different config option. I think we can't do much about it, currently. The device has strange memory requirements and changing the split does actually break it. This cannot be fixed until andi kleen's mask-allocator is merged. This "bug" has always been there. > Working config file (on 2.6.25) is attached. > Diff to the non-working is below: > > --- working_config 2008-04-21 23:42:40.000000000 -0300 > +++ not_working_config 2008-04-21 23:55:28.000000000 -0300 > @@ -1,7 +1,7 @@ > # > # Automatically generated make config: don't edit > # Linux kernel version: 2.6.25 > -# Mon Apr 21 23:28:49 2008 > +# Mon Apr 21 23:43:04 2008 > # > # CONFIG_64BIT is not set > CONFIG_X86_32=y > @@ -228,12 +228,12 @@ > # CONFIG_NOHIGHMEM is not set > CONFIG_HIGHMEM4G=y > # CONFIG_HIGHMEM64G is not set > -CONFIG_VMSPLIT_3G=y > -# CONFIG_VMSPLIT_3G_OPT is not set > +# CONFIG_VMSPLIT_3G is not set > +CONFIG_VMSPLIT_3G_OPT=y > # CONFIG_VMSPLIT_2G is not set > # CONFIG_VMSPLIT_2G_OPT is not set > # CONFIG_VMSPLIT_1G is not set > -CONFIG_PAGE_OFFSET=0xC0000000 > +CONFIG_PAGE_OFFSET=0xB0000000 > CONFIG_HIGHMEM=y > CONFIG_ARCH_FLATMEM_ENABLE=y > CONFIG_ARCH_SPARSEMEM_ENABLE=y > > Can this be the cause? > > Thank you! > > Best regards, > Nelson > -- Greetings Michael.