From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753481Ab0ATXMZ (ORCPT ); Wed, 20 Jan 2010 18:12:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752287Ab0ATXMZ (ORCPT ); Wed, 20 Jan 2010 18:12:25 -0500 Received: from mail-fx0-f220.google.com ([209.85.220.220]:53804 "EHLO mail-fx0-f220.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751961Ab0ATXMY (ORCPT ); Wed, 20 Jan 2010 18:12:24 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=T73GP6ypL/KoTTFFhhEw/lmj7dFaUDQ/F6FJQsgPZs6T0NQKc8a3InHxB12AITEfrX edqb7howNzru8l9itsMlekvzovpTxUGgI4HnZH5ImzjD09JtNgaj1mDv31yGxxFECP/t fCUkP/jNhwACTRfBwqU5VKiR+l73RtXA4x1Bg= Message-ID: <4B578DD4.90908@suse.cz> Date: Thu, 21 Jan 2010 00:12:20 +0100 From: Jiri Slaby User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; cs-CZ; rv:1.9.1.5) Gecko/20091130 SUSE/3.0.0-17.1 Thunderbird/3.0 MIME-Version: 1.0 To: Johannes Weiner CC: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Ralf Baechle , x86@kernel.org, stable@kernel.org Subject: Re: [PATCH] bootmem: avoid DMA32 zone by default References: <20100120153000.GA13172@cmpxchg.org> <1264027998-15257-1-git-send-email-hannes@cmpxchg.org> In-Reply-To: <1264027998-15257-1-git-send-email-hannes@cmpxchg.org> X-Enigmail-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/20/2010 11:53 PM, Johannes Weiner wrote: > I cc'd stable because this affects already released kernels. But since this is > the first report of DMA32 memory exhaustion through bootmem that I hear of, Just for how the setup look like: 128G of RAM, flat mapping sizeof(struct page)=56 0-1.75G mem_map 1.75-2G vfs caches, console and others. initrd reservation 2-4G reserved by BIOS Kernel panics with out of memory when swiotlb tries to allocate 64M of "low" bootmem. -- js suse labs