From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 20 Feb 2008 04:09:56 +0000 (GMT) Received: from sj-iport-5.cisco.com ([171.68.10.87]:12939 "EHLO sj-iport-5.cisco.com") by ftp.linux-mips.org with ESMTP id S20022075AbYBTEJx (ORCPT ); Wed, 20 Feb 2008 04:09:53 +0000 X-IronPort-AV: E=Sophos;i="4.25,379,1199692800"; d="scan'208";a="13623622" Received: from sj-dkim-4.cisco.com ([171.71.179.196]) by sj-iport-5.cisco.com with ESMTP; 19 Feb 2008 20:09:47 -0800 Received: from sj-core-1.cisco.com (sj-core-1.cisco.com [171.71.177.237]) by sj-dkim-4.cisco.com (8.12.11/8.12.11) with ESMTP id m1K49lcY017767 for ; Tue, 19 Feb 2008 20:09:47 -0800 Received: from cliff.cisco.com (cliff.cisco.com [171.69.11.141]) by sj-core-1.cisco.com (8.12.10/8.12.6) with ESMTP id m1K49kJg000969 for ; Wed, 20 Feb 2008 04:09:46 GMT Received: from cuplxvomd01.corp.sa.net ([64.100.148.205]) by cliff.cisco.com (8.6.12/8.6.5) with ESMTP id EAA22289 for ; Wed, 20 Feb 2008 04:09:45 GMT Message-ID: <47BBA809.3050505@cisco.com> Date: Tue, 19 Feb 2008 20:09:45 -0800 From: David VomLehn Reply-To: dvomlehn@cisco.com User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: linux-mips@linux-mips.org Subject: Does HIGHMEM work on 32-bit MIPS ports? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; l=621; t=1203480587; x=1204344587; c=relaxed/simple; s=sjdkim4002; h=Content-Type:From:Subject:Content-Transfer-Encoding:MIME-Version; d=cisco.com; i=dvomlehn@cisco.com; z=From:=20David=20VomLehn=20 |Subject:=20Does=20HIGHMEM=20work=20on=2032-bit=20MIPS=20po rts? |Sender:=20; bh=dfZtjsVYpzGueoXkb0NCcdKJuLlHxI2Gdvla2g0EqFM=; b=ZOxbcvdtvM3v6Gj1BCXhePpfUd6vDbBq1L6Ap+jW/WBK/1/fMhyHnzhvjc 7z5YyqRtB8i/y59E4Tfvpknsr484l0H7usdrWuCmXGlVV5QNGlh4M1rBr8IU einMjBYEY3; Authentication-Results: sj-dkim-4; header.From=dvomlehn@cisco.com; dkim=pass ( sig from cisco.com/sjdkim4002 verified; ); Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 18275 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: dvomlehn@cisco.com Precedence: bulk X-list: linux-mips As we continue to investigate using high memory on MIPS, we keep coming up with odd results. The basic mapping of high memory seems to be working correctly, and if we use an INITRAMFS root filesystem, things seem to work. Things also seem to work with an NFS root filesystem if we disable preemption, though we get someone squirrelly behavior in some minor ways. Has anyone else successfully been able to use high memory on a 32-bit MIPS Linux port? Any feedback would be helpful. -- David VomLehn, dvomlehn@cisco.com The opinions expressed herein are likely mine, but might not be my employer's...