Received: from sj-iport-1.cisco.com ([171.71.176.70]:28993 "EHLO sj-iport-1.cisco.com") by lappi.linux-mips.net with ESMTP id S525971AbYDBV6B (ORCPT ); Wed, 2 Apr 2008 23:58:01 +0200 Message-ID: <47F4011F.9020604@cisco.com> Date: Wed, 02 Apr 2008 14:56:47 -0700 From: David VomLehn MIME-Version: 1.0 Subject: Re: [PATCH 2.6.24][MIPS]Work in progress: fix HIGHMEM-enabled dcache flushing on 32-bit processor Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-Path: Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org To: "Jon Fraser [jfraser"@broadcom.com, linux-mips@linux-mips.org Message-ID: <20080402215647.GxlDtN2DvTQ85aZaeHzNggzH64JTn2ujdXyrDWUREgE@z> > Did this fix your NFS problem? > > I'm working on discontiguous memory platforms as well. > > Jon Fraser > > On Wed, 2008-03-12 at 19:31 -0700, David VomLehn wrote: >> This patch is a work in progress, per Ralf's suggestion from last >> week. It is intended to fix dcache flushing issues when using HIGHMEM >> support. We get much better results with this patch applied, but I >> would not characterize our 2.6.24 port as stable, yet, so there may be other HIGHMEM-related issues. Yes, we are able to boot using NFS with this patch. There are some other minor changes that appear necessary for correct cache flushing but which don't seem to be causing any actual issues. (Cache stuff just works that way--you don't know you've got a problem until you get into some obscure corner case). I'll post these as soon as I can get to it. I can't say whether these are all the changes required for high memory support, but we sure get a lot farther when we use them... -- David VomLehn, dvomlehn@cisco.com The opinions expressed herein are likely mine, but might not be my employer's...