From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261960AbVHEVIL (ORCPT ); Fri, 5 Aug 2005 17:08:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261908AbVHEVIK (ORCPT ); Fri, 5 Aug 2005 17:08:10 -0400 Received: from fmr24.intel.com ([143.183.121.16]:14282 "EHLO scsfmr004.sc.intel.com") by vger.kernel.org with ESMTP id S261960AbVHEVG3 (ORCPT ); Fri, 5 Aug 2005 17:06:29 -0400 Message-Id: <200508052105.j75L5jg31470@unix-os.sc.intel.com> From: "Chen, Kenneth W" To: "'Adam Litke'" , Cc: , , Subject: RE: [RFC] Demand faulting for large pages Date: Fri, 5 Aug 2005 14:05:42 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.6353 Thread-Index: AcWZ00XQTpOmHs4TRqi/fjGiR6pjDwALSojw In-Reply-To: <1123255298.3121.46.camel@localhost.localdomain> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Adam Litke wrote on Friday, August 05, 2005 8:22 AM > Below is a patch to implement demand faulting for huge pages. The main > motivation for changing from prefaulting to demand faulting is so that > huge page allocations can follow the NUMA API. Currently, huge pages > are allocated round-robin from all NUMA nodes. Do users of hugetlb going to accept the fact that now app will SIGBUS when there aren't enough free hugetlb pages present at the time of fault? It's not very nice though, but is that the general consensus?