Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759586AbXIMJtq (ORCPT ); Thu, 13 Sep 2007 05:49:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751703AbXIMJtg (ORCPT ); Thu, 13 Sep 2007 05:49:36 -0400 Received: from mtagate6.de.ibm.com ([195.212.29.155]:55532 "EHLO mtagate6.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750766AbXIMJtf (ORCPT ); Thu, 13 Sep 2007 05:49:35 -0400 In-Reply-To: References: <200709121439.32641.fenkes@de.ibm.com> Subject: Re: [PATCH] IB/ehca: Make sure user pages are from hugetlb before using MR large pages To: Roland Dreier Cc: "OF-EWG" , "OF-General" , Hoang-Nam Nguyen , Joachim Fenkes , LKML , "LinuxPPC-Dev" , Roland Dreier , Stefan Roscher X-Mailer: Lotus Notes Release 8.0 August 02, 2007 Message-ID: From: Christoph Raisch Date: Thu, 13 Sep 2007 11:49:19 +0200 X-MIMETrack: Serialize by Router on D12ML067/12/M/IBM(Release 7.0.2HF71 | November 3, 2006) at 13/09/2007 11:49:32 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 732 Lines: 22 Roland Dreier wrote on 13.09.2007 06:33:45: > > Also if someone runs a kernel with 64K pages on a machine where they > end up being simulated from 4K pages, do you have the same issue with > the hypervisor ganging together non-contiguous pages? With todays hypervisor and todays pagesizes and todays MMUs we don't have this problem if eHCA is enabled. It is difficult to make predictions about the future, but that's not specific to driver development. ;-) > > - R. - Christoph R. - 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/