From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266296AbUHGINT (ORCPT ); Sat, 7 Aug 2004 04:13:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266344AbUHGINT (ORCPT ); Sat, 7 Aug 2004 04:13:19 -0400 Received: from holomorphy.com ([207.189.100.168]:211 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S266296AbUHGINQ (ORCPT ); Sat, 7 Aug 2004 04:13:16 -0400 Date: Sat, 7 Aug 2004 01:13:11 -0700 From: William Lee Irwin III To: "Chen, Kenneth W" , "'Hirokazu Takahashi'" , linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, "Seth, Rohit" Subject: Re: Hugetlb demanding paging for -mm tree Message-ID: <20040807081311.GY17188@holomorphy.com> Mail-Followup-To: William Lee Irwin III , "Chen, Kenneth W" , 'Hirokazu Takahashi' , linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, "Seth, Rohit" References: <20040806.013522.74731251.taka@valinux.co.jp> <200408062055.i76KtcY08296@unix-os.sc.intel.com> <20040806210750.GT17188@holomorphy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040806210750.GT17188@holomorphy.com> User-Agent: Mutt/1.5.6+20040722i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 06, 2004 at 02:07:50PM -0700, William Lee Irwin III wrote: > update_mmu_cache() does not appear to check the size of the translation > to be established in many architectures. e.g. on arch/ia64/ it does > flush_icache_range(addr, addr + PAGE_SIZE) unconditionally, and only > sets PG_arch_1 on a single struct page. Similar comments apply to > sparc64 and ppc64; I didn't check any others. In general not much seems to be getting done about cache coherency in hugetlb at all. This may be problematic even in mainline. -- wli