From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754311AbbINOq5 (ORCPT ); Mon, 14 Sep 2015 10:46:57 -0400 Received: from mail-oi0-f50.google.com ([209.85.218.50]:33426 "EHLO mail-oi0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752209AbbINOq4 (ORCPT ); Mon, 14 Sep 2015 10:46:56 -0400 Subject: Re: Fwd: [PATCH] x86: Use larger chunks in mtrr_cleanup To: Prarit Bhargava , "Luis R. Rodriguez" References: <55E477DE.2060106@gmail.com> <55E47B4D.1050103@gmail.com> <20150903024542.GS8051@wotan.suse.de> <55E83A3E.3030000@redhat.com> Cc: tglx@linutronix.de, mingo@redhat.com, "H. Peter Anvin" , linux-kernel@vger.kernel.org, x86@kernel.org, mcgrof@do-not-panic.com, Toshi Kani From: Stuart Hayes Message-ID: <55F6DDDF.70909@gmail.com> Date: Mon, 14 Sep 2015 09:46:55 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <55E83A3E.3030000@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> >> Linux drivers no longer use MTRR so why is the cleanup needed, ie, what would >> happen if the cleanup is just skipped in your case ? > > The infiniband & video drivers still use MTRR (or at least it was my > understanding that they do). In any case, Stuart -- could you try booting with > 'disable_mtrr_cleanup' as a kernel parameter? > > P. > Sorry for the delayed response. Booting with 'disable_mtrr_cleanup' works, but the system I am working with isn't actually failing--it just gets ugly error messages. And the BIOS on the system I am working with had set up the MTRRs correctly. Stuart